Question

27. Two right circular solid cylinders have radii in
the ratio 3 : 5 and heights in the ratio
2:3. Find the ratio between their :
(1) curved surface areas.
(ii) volumes.​

Answer 1

Answer:

Given;

ratio of radii of two cylinder = 3:5.

ratio of their heights= 2:3.

Step-by-step explanation:

CSA of cylinder= 2πrh

volume = πr² h.

1) hence ,their ratio of volume =

(πr²h) 1: (πr²h)2

= π 3x²×2/π 5x² × 3

=9 x² × 2/ 25x²× 3

= 3× 2/ 25

= 6/ 25

so, their ratio of volume = 6: 25.

2) ratio of their CSA= (2π rh)1:(2πrh)2

= 2π 3x × 2/ 2π 5x× 3

= 2/5

hence their ratio of CSA is 2:5.( ans).

here ,is Ur ans mates hope it's helpful thnx...