Question

11. The volume of a right circular cylinder of height 7 cm is 567 it cm. Find its curved surface area. TT Volume of two hemispheres are in the ratio 64:27, then find the ratio of their surface areas. ​

Answer 1

Correct option is A)

Here,

r=6cm and h=7cm

Volume of right circular cone =

3

1

πr

2

h

=

3

1

×

7

22

×(6)

2

×7

=

3

1

×22×36

=264cm

3

hope it will help you