# Then Its Volume Is;

The height of a right circular cylinder is 21 cm. Its curved surface area is 924 sq cm. Then its volume is;

- 1859 cu. cm
- 1586 cu. cm
- 3234 cu. cm
- None of these

**Answer: (3). 3234 cu. Cm**

Given: Height of right circular cylinder is 21 cm.

C.S.A of cylinder is 924 sq. cm.

C.S.A of cylinder = 2πRH

2πRH = 924

R = (924×7) ÷ (2x22x21)

R = 6468 ÷ 924

R = 7 cm.

Now, we have to find Vol. of cylinder

Vol. of cylinder = πR^{2}H

Vol. of cylinder = (22x7x7x21) ÷7

Vol. of cylinder = 3234 cu. Cm.