Question

The radii of two hemisphere is r:2r ,then the ratio of TSA is​

Answer 1

Answer:

Step-by-step explanation:

Let radius of two hemisphere be r1 & r2

Ratio of radii of two hemisphere are r:2r.

So, ratio of their TSA = 3πr1^2/3πr2^2

=r1^2/r2^2

=1^2/2^2

=1/4. =>1:4.

Answer