Question

If the radii of 2 right circular
Cylinders are in the ratio 1:2 and
their heights are in the ratio 4:3
Then what is the ratio of their
curved swyace areas​

Answer 1

Answer:

r1:r2=l: 2

hi:h 2 = 4:3

Ai:A2 ratio of csa's

2πrihi. :2 πr 2h 2 =

2πxlx4:2π2x3

8:12

2:3.

Ratio of CsA's=2:3

Answer 2

Answer:

A rectangular sheet of paper of dimension 25cm×22cm is rolled along its width to form a cylinder find the volume of cylinder so formed