Question

.The radius and height of a cylinder are in the ratio 5:7 and its curved surface area is 220cm2

. Find its radius

and height.​

Answer 1

Step-by-step explanation:

let r=5x and h=7x

csa=2×22/7×r×h

220=44/7×5x×7x

220×7/44=35x^2

35=35x^2

1=x^2

1=x

r=5x=5cm

h=7x=7cm