Question

a cylindrical paint roller has a length of 10 inches and a diameter of 1 1/2 inches. As the roller is dragged along a wall, if it completes 4 revolutions, what is the approximate area the roller will cover with paint?

Answer 1

I hope this helps you radius= 1 1/2=1.2+1/2=3/2 lateral area= 2pi.r.height area= 2.pi.3/2.10 area =30pi 4.30pi=120pi