Question

The radius of a rollar is 56cm and its lenght is 125cm. Find the area levelled by the rollar in one revolution and 250 revolutions. Plz convert the answer in m2.

Answer 1

Radius= 56cm= 0.56m
Height or length = 125cm=1.25m
C.S.A of rollar = 2πrh
= 2×22/7×0.56×1.25
= 4.4 m square
Area levelled in one revolution = 4.4m square
'' '' in 250 revolutions= 4.4× 250= 1100m square