1. A roller has a diameter 0.5 m and length 1.5 m. Find the number of revolutions it has to make to cover an area of 264 sq. m
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Answer:
given diameter=0.5m
therefore radius=0.5/2
=0.25m
height of the roller=1.5m
CSA of the roller=2πrh
=2×3.14×0.25×1.5
=2.355m²
no. of revolutions to cover 264m²=264/2.355
=112.1
hence, it will take 112.1 revolutions to cover 264m²
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