Question

A jokers cap is in the form of a right circular cone of base radius 7 cm and height 24 cm. Find the area of the sheet required to make 10 such caps​

Answer 1

Answer:

Step-by-step explanation:

Given  

r=7 cm

h=24 m

Let slant height be ′l′

 We know  l²  =h² +r²

l² =24²  +7²

l² =576+49

l² =625

l=25 cm

Curved surface area of 1 jokers cap =πrl

                                                              = 22/7 ×7×25

                                                           =22×25

                                                           =550cm²

 

So,  

Curved surface area of 10 jokers cap =10×550

                                                              =5500cm²