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A cylindrical roller is length 2m and diameter 84cm find the no of revolutions it has made to cover an area of 7920cm2
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Given, length = 2m = 200 cm
Radius of the roller = 84 cm = 42 cm
Surface area = 2 pi r h
= 2 * 22/7 * 42 * 200
= 52800 cm^2
= 5.28 m^2
Number of Revolutions = 7930/5.28
= 1501
Radius of the roller = 84 cm = 42 cm
Surface area = 2 pi r h
= 2 * 22/7 * 42 * 200
= 52800 cm^2
= 5.28 m^2
Number of Revolutions = 7930/5.28
= 1501
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