Question

r:h=5:7 of a cylinder and volume=550cm2 find its radius

Answer 1

Answer:

Step-by-step explanation:

r/h =5/7 and v= 550cm2

therefore, let the radius be 5x and the height be 7x,

so,volume of cylinder = π r2h

                 550           =22/7 X( 5x )^2 X 7x

                  550/22 X 25 =x^3

                            1 = x^3

                                1 = x

therefore , radius = 5x

                               = 5 X 1

                                 =5 cm