Question

The radius and height of a cylinder are in the ratio 5:7 and its volume is 550cm
3
. Find its radius.

Answer 1

Volume of the cyclinder is pi r^2h put the value of h in term of r r/h = 5/7 or r=5h/7 and volume of cyclinder is given then u cn simplifie

Answer 2

Let the radius of cylinder be 5a and height be 7a..
Volume of cylinder=πr^2h
550=22/7 x 5a x 5a x 7a
550=550a x a
550/550 =a^2
a=1
radius =5cm
height=7cm