a road roller makes 200 rotations in covering 2200metres find radius of roller
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circumference of circle=2πr
hence distance covered by 200 rotation =200 x 2πr =400πr
now ,
2200 =400 x 22/7 x r
r=7/4m
hence distance covered by 200 rotation =200 x 2πr =400πr
now ,
2200 =400 x 22/7 x r
r=7/4m
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