Question

A solid right cylinder of height π . whose lateral surface area equal to half of its total surface area. Then its radius

Answer 1

LSA = 1/2 of TSA

2π rh = 1/2 (2π rh + 2π r^2)

2πrh== πrh + πr^2

πrh= π r r

h = r

But h = π (given)

h= r= π