Question

A fez, the cap used by the Turks, is shaped like the
frustum of a cone (see Fig. 13.24). 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.​

Answer 1

Step-by-step explanation:

Given:

Radius (r) of upper circular end =4 cm

Radius (R) of lower circular end =10 cm

Slant height (l) of frustum =15 cm

Area of material used for making the fez = CSA of frustum + Area of upper circular end

=π(R+r)l+πr

2

=π(10+4)×15+π×4

2

=210π+16π=

7

226×22

=710

7

2

cm

2

Therefore, the area of material used for making it is 710

7

2

cm

2

.

Answer 2

The required answer is in the attachment