Question

a solid cylinder has total surface area of 462sqcm it curved surface area is one -third of its total surface area find the volume of the cylinder

Answer 1

we know total surface area of cylinder is 2πrh+2πr^2=462(and 2πrh=154)
2πr^2=308 and hear r=7.
we find the value of r then put this value in curved surface area we get height =3.5
so put the value of r and h on volume of cylinder we get 1886.5