Question

The ratio of tsa and csa of a cylinder with base radius70cm and height 30cm

Answer 1

Given: radius, r= 70cm and height,h = 30cm

To find: TSA /CSA

Solution: TSA/CSA=2πr (h + r)/2πrh

⇒TSA/CSA=(h+r)/h

⇒TSA/CSA=(30+70)/30

⇒TSA/CSA=100/30

⇒TSA:CSA=10:3