A road rollar takes 150 complete revolution to move once over to level a road. Find the area of the road if the diameter of the roller is 60cm and length is 2.1m
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lateral surface area of roller=2×π×r×h
=2×3.14....×.3×2.1
=3.9584cm^2
area of road=15o×lateral surface area of roller
=150×3.9584=
=593.7610cm^2
=2×3.14....×.3×2.1
=3.9584cm^2
area of road=15o×lateral surface area of roller
=150×3.9584=
=593.7610cm^2
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