Question

find the area covered by a road roller of width 80 cm and diameter 140 cm in 40 revolutions.​

Answer 1

Answer:

Hey there

Step-by-step explanation:

In this case we are supposed to find the Curved Surface area of the roller

C.S.A of a cylinder= 2πrh

in this case

diameter=140 cm

therefore radius = 140 cm/2 =70 cm

C.S.A. of roller = 2*22/7*70*80

= 35200 sq.cm

No. of revolutions= 40

hence area covered= 35200*40

that is 1408000 sq.cm

answer:1408000 sq.cm

hope it helped