Question

Ratio of curved surface areas of two hemisphere is 4:9, Then the ratio of their volumes​

Answer 1

Answer:

Step-by-step explanations

Given CSA ratio is 4:9

Therefore

2πr1^2÷2πr2^2=4÷9

In this 2π in both gets cancel

Remaining r1^2 ÷ r2^2 = 4÷9

Therefore r1^2 = 4 or r1 = √4 = 2

Same r2 = 3

So the ratio of their volume is 8:27