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The diameter of a roller 1.7 m long is 84cm . if it takes 350 complete revolution. determine the area of the playground |
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Answer» in ONE revolution 2 pi R L is the area covered. one rev = 6.28x 42x1700 = 448392 square cm = 44.83 sq Meter. in 350 revolution total area: 44.83x350 = 15964 square meter |
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