a roller 140 cm long has a radius of 35cm to level the playground it takes 980 complete revolutions - Maths - Surface Areas and Volumes

Question

a roller 140 cm long has a radius of 35cm to level the playground
it takes 980 complete revolutions determin the cost of levellling
the playground at the rate of 75 paisa per square metre

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a roller 140 cm long has a radius of 35cm. to level the playground it takes 980 complete revolutions. determin the cost of levellling the playground at the rate of 75 paisa per square metre .