diameter and length of a roller are 84 CM and 120 CM respectively in how many Revolution scan the roller level the playground area of 1584 m square
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diameter = 84cm
length = 120cm
lateral surface of roller = 2πrh
=2×22÷7×120
=44×120÷120
=744cm2
=0.0744m2
= no of revolution = 1584÷0.0744
length = 120cm
lateral surface of roller = 2πrh
=2×22÷7×120
=44×120÷120
=744cm2
=0.0744m2
= no of revolution = 1584÷0.0744
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