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# Topic: Circumference

###### In the News (Thu 20 Sep 18)

 Circumference is the ratio of the circumference of a circle to the diameter. The circumference of a circle is 15.7 centimeters. The diameter of a nickel is 2 centimeters. www.mathgoodies.com /lessons/vol2/circumference.html   (530 words)

 SparkNotes: Geometric Measurements: Circumference The circumference of a circle is the length of the curve that encloses that circle. In fact, the circumference is dependent solely on the radius of a circle: circumference equals 2πr, where r denotes the length of the radius. Thus, the circumference of a circle is the length of the 360 degree arc of that circle. www.sparknotes.com /math/geometry2/measurements/section2.rhtml   (372 words)

 Circumference - Wikipedia, the free encyclopedia The circumference is the distance around a closed curve. Where r is the radius and d is the diameter of the circle, and π (the Greek letter pi) is the constant 3.141 592 653 589 793... The circumference of an ellipse is more problematic, as the exact solution requires finding the complete elliptic integral of the second kind. en.wikipedia.org /wiki/Circumference   (243 words)

 Waist Circumference, BMI, Smoking, and Mortality in Middle-Aged Men and Women -- Bigaard et al. 11 (7): 895 -- Obesity Associations between waist circumference and BMI and all-cause mortality within the 5th to 95th percentiles of all men and women 50 to 64 years of age. mutual adjustment for waist circumference and BMI (28). of waist circumference and BMI with mortality, and, furthermore, www.obesityresearch.org /cgi/content/full/11/7/895   (5071 words)

 Does Size Matter or Is Bigger Better   (Site not responding. Last check: 2007-11-05) As the name implies, occipitofrontal circumference is a measurement of the circumference of the head around the occiput, or posterior aspect, of the skull, to the most anterior portion of the frontal bone. Therefore, head circumference accurately reflects brain size and growth during gestation and the first years of life—the period of the majority of brain growth—except in unusual situations such as hydrocephalus, enlargement of the subdural space, significant scalp edema or a rickets-thickened skull. For a given head circumference, genetic, biologic and environmental risk factors as well as the presence of a specific medical diagnosis will worsen the prognosis for any given head circumference (e.g., retardation in the family, congenital rubella, syphilis or prenatal alcohol exposure, prematurity, early childhood institutionalization, cerebral palsy or severe developmental delay). www.russianadoption.org /Headcircumferencedj.htm   (5952 words)

 Finding the circumference given the radius Math Lesson Plan, Thematic Unit, Activity, Worksheet, or Mathematics ... One of those four numbers is randomly circled by the instructor beforehand, which is the radius assigned to a particular student. Using the yarn, let them measure the circumference of the circle, and fill in diameter and circumference for the assigned radius. Have students guess what the circumferences of the circles are with the non-assigned radii and instruct them to write them down in the matrix. www.lessonplanspage.com /MathFindCircumferenceGivenRadius67.htm   (407 words)

 Circumference The circumference of a circle is the distance around the circle. That is, the circumference of a circle is its perimeter. Thus, the circumference, C, of a circle is given by: www.mathsteacher.com.au /year8/ch11_perimeter/06_circum/circum.htm   (273 words)

 Circumference and Radius   (Site not responding. Last check: 2007-11-05) I know this is hypothetical, and involves many generalities (among them the circumference of the earth) but the math seems to play out. Circumference and radius are both linear dimensions, and are proportional to each other. Interestingly, it does not matter what the initial circumference and radius of a circle are, increasing the circumference by six feet will increase the radius by about one foot. www.newton.dep.anl.gov /askasci/math99/math99160.htm   (434 words)

 Circumference/Perimeter of an Ellipse: Formula(s) - Numericana Circumference of an Ellipse by Robert L. Ward in "MathForum@Drexel". The original motivation of the paper by Barnard, Pearce and Shovanec was to prove that Muir's formula is indeed a lower bound for the circumference of any ellipse (a question apparently first raised by Matti Vuorinen in 1996). When a very precise value of the circumference of an ellipse is needed at a reasonable computational cost over the whole range of eccentricities (including both extremes), a very good idea is therefore to use the above expansion if the ellipse is somewhat elongated and the Gauss-Kummer expansion otherwise... home.att.net /~numericana/answer/ellipse.htm   (5734 words)

 SparkNotes: Perimeter and Area: Circumference and Area of a Circle The circumference of a circle is its "perimeter," or the distance around its edge. Since π is the ratio of the circumference to the diameter, π = c/d; c = π×d; and d = c/π; where c and d are the circumference and the diameter, respectively. The circumference divided by the diameter should be roughly equal to π. www.sparknotes.com /math/prealgebra/perimeterarea/section3.rhtml   (588 words)

 Waist Circumference Can Signal a Syndrome / June 7, 2004 / News from the USDA Agricultural Research Service Volunteers in the "white bread" group consumed about 16 percent of their daily calories as white bread or refined grains, which is almost five times more than was consumed in the "healthy" group. While those in the "healthy" cluster gained an average 1/6-inch in waist circumference annually, those in the "white bread" cluster gained close to half an inch annually. Abdominal weight gain and corresponding increase in waist circumference contribute more than does overall weight to the development of "metabolic syndrome." This condition is noted by a combination of abdominal obesity, high triglycerides, high blood pressure and poor blood sugar control, all of which increase risk for heart disease and diabetes. www.ars.usda.gov /is/pr/2004/040607.htm   (371 words)

 Circumference and Pi For helmets we need the circumference of your head at the temple, the distance from your eyebrows to the base of your neck in back, and the distance from ear to ear over the head. For bracers the length and circumference of your forearm at the elbow and wrist. For breastplates the circumference and length of your chest. www.mste.uiuc.edu /courses/ci430fa00/school/3/geometry/ccf_pi.html   (575 words)

 Circumference Cycles This sculpture is called “Circumference” and is made of hand blown glass circular disks suspended by thin steel cables. The music created with The Circumference is both rhythmic and harmonic, resulting in a sound that is a blend of the tones of the glass and the “guitar” strings combined and resonating sympathetically. Strollo and Blaine are composing the music for the instrument and Stanaway is continuing to develop the distinctive visual and sculptural elements of the piece. www.jamodrum.net /circumference.html   (884 words)

 Ellipse Circumference Here we evaluate the circumference of an ellipse with semi-axes a and b, considered as the two-dimensional variety of n-dimensional ellipsoids. Apparently, one would think that computing the circumference S of an ellipse with semi-axes a and b is an established task and that one can hardly say anything new about the topic. Here we present a method for a derivation of approximations to the ellipse circumference based on the exploitation of border cases (one semi-axis null or all semiaxes equal), symmetry under permutations and the dimensional scaling property. www.ebyte.it /library/docs/math05a/EllipseCircumference05.html   (1232 words)

 Circumference and Area The goal of this unit is to teach circumference and area of circles. To find the circumference of a circle using the proper formula. To solve 10 additional problems that challenge students' understanding of circumference and area of circles. www.mathgoodies.com /lessons/toc_vol2.html   (141 words)

 All Elementary Mathematics - Study Guide - Geometry - Geometrical locus. Circle and circumference... Assume also, that point M is moving along the circumference, approaching the point K. Then the secant PQ will change its position, rotating around the point K. As approaching the point M to the point K, the secant PQ tends to some limit position AB. The straight line AB is called a tangent line or simply a tangent to the circumference in the point K. The point K is called a point of tangency. is a round angle of a circumference, which in a degree measure is equal to 360 deg. www.bymath.com /studyguide/geo/sec/geo10.htm   (1116 words)

 Obesity Education Initiative Electronic Textbook--Treatment Guidelines Waist circumference measurement is particularly useful in patients who are categorized as normal or overweight on the BMI scale. The waist circumference at which there is an increased relative risk is defined as follows. In some populations, waist circumference is a better indicator of relative disease risk than is BMI: examples include Asian Americans or persons of Asian descent living elsewhere (51, 273, 544). www.nhlbi.nih.gov /guidelines/obesity/e_txtbk/txgd/4142.htm   (594 words)

 News | Circumference   (Site not responding. Last check: 2007-11-05) Circumference was proud to sponsor and participate in the ORCCA Career Excellence Awards Gala May 11, 2006, Circumference co-sponsored and showcased their customer service business solutions at the Ottawa Chapter HDI Tradeshow. March 2004 - Circumference and Nordia selected as finalists for the OCRI 2004 Technology Partnership Award www.circumference.ca /ctsnews.htm   (285 words)

 Scrotal Circumference Scrotal circumference (SC) in young bulls is a useful indicator of reproductive potential in beef cattle. This does not mean that negative scrotal circumference EPD bulls should be discriminated against as fertility in beef cattle is influenced by many additional factors. It is suggested that breeders should be more concerned about not using bulls with extremely negative SC EPDs as opposed to using only bulls with positive SC EPDs. www.angus.org /sireeval/scrotal.html   (257 words)

 Head circumference This is a measurement of the circumference of the child’s head at its largest area (above the eyebrows and ears and around the back of the head). During routine check-ups, the distance is measured in centimeters and compared with previous measurements; normal ranges are based on sex and age (weeks, months). Measurement of the head circumference is an important part of the routine well baby care. www.healthscout.com /ency/1/002379.html   (292 words)

 Home | Circumference Circumference Contact Center Customer Care solution helps Nordia win Gold at the CIPA Awards Circumference develops a custom remote customer management solution for Circumference is leading technology solutions provider for Call Centers, specializing in administration and operations management solutions that improve customer and employee satisfaction, optimize performance and reduce operating expenses. www.circumference.ca   (195 words)

 Head Circumference Charts for Children with Down Syndrome   (Site not responding. Last check: 2007-11-05) Len Leshin about this and he said, "Pediatricians stop measuring head circumferences of all children at about three years of age. The 50th Percentile curve represents the average head circumference growth for children with Down syndrome. If your child's head circumference falls between the lower and upper curves and follows along the path of the curves on the chart, that is an indication of normal head growth. www.growthcharts.com /charts/DS/hccharts.htm   (269 words)

 Circumference of a Circle The circumference of a circle is the distance around the outside of the circle. It could be called the perimeter of the circle. The circumference of a circle can be found by multiplying pi (π = 3.14) by the diameter of the circle. www.aaamath.com /B/g59_cix1.htm   (85 words)

 Increased head circumference Symptoms associated with this condition include vomiting, eyes deviating downward, and irritability. Physical examination may include repeated measurements of the head circumference over a period of time to confirm that the head circumference is significantly increased. If a diagnosis was made by your health care provider of the cause of increased head circumference, you may want to note that diagnosis in your personal medical record. pennhealth.com /ency/article/003305.htm   (450 words)

 BBC - GCSE Bitesize - Maths | Shape, space and measures | Circumference of a circle The circumference is the length of the edge around a circle. It does not matter which of these formulae you use, but you must be careful to use the correct length for the formula (the radius or the diameter). Find the circumference of a wheel of diameter 50cm. www.bbc.co.uk /schools/gcsebitesize/maths/shape/circlesrev3.shtml   (155 words)

 Math: Geometry: Circumference | eThemes | eMINTS Learn how to calculate the circumference of a circle also known as a perimeter of a circle. Circles: Diameter, Circumference, Radius, and the Discovery of Pi Learn the formulas for circumference of a circle and learn how to solve problems involving diameter and radius of a circle. www.emints.org /ethemes/resources/S00001606.shtml   (391 words)

 Great Pumpkins The circumference of a 1000 pound pumpkin (measured around the widest part since the pumpkin is a rather flattened sphere at best) is around 15 feet. During the height of the growing season, the giant pumpkin's circumference increases by an average of 4 to 6 inches per day. Have students look at a pumpkin and cut a piece of string that they think will be as long as the pumpkin's circumference. www.riverdeep.net /current/2001/10/102201t_pumpkins.jhtml   (979 words)

 Example 2: Computing the Circumference and Area of a Circle   (Site not responding. Last check: 2007-11-05) The program should prompt the user to enter the radius of a circle. The program should compute and display the circumference and area of that circle on the screen with four decimal places of accuracy. Output circumference to cout (with an appropriate format) www.cse.msu.edu /~cse231/Examples/CoursePack/Example02.htm   (248 words)

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