Question

The diameter of a roller is 1.2 m and it is 2.4 m
long. How much area will it cover in 1 revolution?​

Answer 1

Step-by-step explanation:

Area covered = Curved surface × Number of revolutions

r= 1.2/2 =0.6 m

h=2.4m

Curved surface = 2πrh=2× 22/7×0.6×2.4= 9.05m^2

Hence,

Area covered = 9.05×1= 9.05m^2