The given figure shows a metal pipe 77 cm long. The inner diameter of a cross-section is 4 cm and the outer one is 4.4 cm.

Find its outer curved surface area

Question

The given figure shows a metal pipe 77 cm long The inner diameter of a crosssection is 4 cm and the outer one is 44 cm Find its outer curved surface area

Accepted Answer

Solution In cylinder ther are two types of curved surface area One is inner surface area and the other one is outer surface area Given height of the metal pipe 77 cm Inner diameter 4 cm Inner radius r d2 42 2 cm Outer diameter 44 cm Outer radius R d2 442 22 cm Outer curved surface area 2 Rh 22272277 10648 cmsup2sup Hence the outer curved surface area is 10648 cmsup2sup

ML Aggarwal Solutions Class 10 Mathematics Solutions for Mensuration Exercise 17.1 in Chapter 17 - Mensuration