Question

The diameter of a garden roller is 1.4 m and it is 2 m long how much area will it covers in 50 revolution (distance covered in one revolution is equal to surface area)

Answer 1

diameter of roller is 1.4 m
so, radius of roller=0.7m
hence, roller is cylinderical shape
so, suface area=2πrh
=2×22×0.7×2/7
=8.8m
so, covered area in 50 revolution= 50×8.8
=440m answer