Find the area covered by a road roller in 250 revolutions, if its radius is 42 cm and length is 80 cm.
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Answer:
5,280,000 cm^2
Step-by-step explanation:
given radius =42cm
length =80cm
area coverd by road roller in one revolution =2πrh
=2*(22/7)*42 cm*80 cm
=21,120 cm^2
area coverd by road roller in 250 revolutions is
= 250* 21,120
=5,280,000 cm^2
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