Question

The radius and heightvof a cylinder and in the radio. 2:7 its volome is 704 cm3 find the radius

Answer 1

Answer:

radius = 4 cm

Step-by-step explanation:

let the radius and height of cylinder be 2x and 7x.

volume of cylinder= pie r*rh

                             704 = 22/7 *2x*2x*7x

                              704*7 = 22*28x³

                               4928/22=28x³

                               224 = 28x³

                               224/28 = x³

                               8  = x³

                               2 = x

                 radius = 2x =2*2 = 4 cm