A fez the cap used by the Turks is shaped like the frustum of a cone see Fig If its radius on the op...

Question

A fez the cap used by the Turks is shaped like the frustum of a cone see Fig If its radius on the open side is 10 cm radius at the upper base is 4 cm and its slant height is 15 cm find the area of material used for making it

Accepted Answer

Given For the lower circular end radius rsub1sub 10 cm For the upper circular end radius rsub2sub 4 cm Slant height l of frustum 15 cm Now The area of material to be used for making the fez CSA of frustum Area of upper circular end CSA of frustum rsub1subrsub2subl 210 And Area of upper circular end rsub2subsup2sup 16 The area of material used 226 cmsup2sup

NCERT Solutions Class 10 Mathematics Solutions for Surface Areas and Volumes - Exercise 13.4 in Chapter 13 - Surface Areas and Volumes