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A road roller takes 500 complete revolutions to move once over to level a road.
Find the area of the road if the diameter of a road roller is 42 cm and its length is im
(use =22 )
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Answer:
no. of revolution = area covered / CSA of the cylinder
500= area covered / 2π r h
500= area covered / 2*22/7*21*100
500= area covered / 13200
500*13200= area covered
6600000 cm² area covered
660m² =area covered
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