Answers

2016-03-08T17:45:23+05:30
Diameter of the roller = 1.4m Radius if the roller = 1.4/2= 0.7m Length of roller=2m Area covered in one revolution = CSA of roller = 2 pi r h = 2x22/7x0.7x2 =8.8m2 Therefore area covered = CSA x no. Of revolutions =8.8x15 =132m2
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2016-03-08T19:23:35+05:30
Diameter=1.4m
so,radius,r=0.7m
h=2m
area covered in one revolution=c.s.a of roller
=2×pi×r×h
=2×22/7×0.7×2
=44/7×1.4
=8.8m^2
so, area covered in 15 revolution=(8.8×15)m^2
=132m^2
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