Question

find the ratio of the total surface area of the hemisphere with diameter 38 cm. to surface area of Sphere having radius 14 cm. ?​

Answer 1

Answer:

1083:784 is the answer.

use formula for TSA of sphere = 4πr²

TSA of hemisphere = 3πr²

Answer 2

Answer:

361/147

Step-by-step explanation:

tsa of sphere=4πR²

tsa of hemisphere =3πr²

ratio= 4πR²/3πr²

=4R²/3r²

= 4R²/3*14*14

= 19*19/3*7*7

= 361/147