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Discus throw - Wikipedia, the free encyclopedia |
 | | The discus, the object to be thrown, is a lens-shaped heavy disc with a diameter of 220 mm (8.66 inches) and a weight of two kilograms (4 lb 7 oz) for the men's event, and one kg (2 lb 3 oz) for the women's, with a smaller diameter of 182 mm (7.17 inches). |
 | | A practice discus made of solid rubber is often used in high school; it is cheaper, more durable, and easier to learn to throw with (due to the more equal distribution of weight, as opposed to the heavy rim weight of the metal rim/core disci). |
 | | The discus must land within a 40-degree or 60-degree arc marked by lines on the landing zone, and the competitor must not exit the circle until the discus has landed, then must wait for the judge to give clearance to exit the ring from any direction. |
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