Question

The adjoining figure shows the measures of a Jokers cap. How much cloth is needed to make such a cap?

Answer 1

Given,

Slant Height $=21cm$ and Radius $=10cm$

We know that the curved Surface Area of Cone $=\pi rl$

$=\frac{22}{7}\times 10\times 21$

$=660c{m}^2$

So, the area of sheet of cloth is $660c{m}^2$ to make a cap.

For making a such cap, area of sheet of cloth needed

$=660c{m}^2$

Hence, this is the answer.