Question

The radius and the height of a cylinder are in the ratio 5 is to 7 and its volume is 14850 cm cube find the curved surface area of the cylinder

Answer 1

volume= 22/7*(5x)^2*7x
14850=22/7*25x^2*7x
14850=22*25x^2*x
14850=550x^3
14850/550=x^3
27=x^3
3=x
5*3=15
7*3=21
2*22/7*15*21=1980

Answer 2

Let the common multiple be X

Radius 5X

Hight 7X

Volume of cylinder = I √r h

14850=22/77×5X×5X×7X

14850÷550=X

√27=X

3=X