A road roller takes 500complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 84cm and length is 1 m.
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Answer: 1320m²
Step-by-step explanation: area of a hollow cylinder= 2πrh
radius of the road roller= 84/2= 42cm
let pi= 22/7
=2*22/7*42*100(length = height)
= 26400
26400*500(times)
= 13200000cm²
1cm²= 0.0001m²
= 1320m²
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