A road roller makes 200 rotations in covering 2200m. Find the radius of the roller?
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Step-by-step explanation:
Roller make 200 rotation to cover a distance = 2200m
2×22/7×r ×200 = 2200
r = 2200×1/2×7/22×1/200
r = 1100×1/200×7/22
r = 11/2×7/22
r = 7/4
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