Question

find the volume of a sphere whose surface area is 154 cm square​

Answer 1

Step-by-step explanation:

Surface area = 4πr2 = 154

r2 = 154 ×7 / 22 ×4 = 49/4 = 7/2cm

volume = 4/3πr3 =  539 /3 = 179.66 (approx)