A metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being
Channel: Doubtnut
Date: 2020-07-05

A metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4 cm.Â Find its(i) inner curved surface area,(ii) outer curved surface area,(iii) total surface area