Question

find the volume of a sphere whose surface area is 154 cm square if you are boy or girl tell me the correct answer​

Answer 1

Answer:

CSA = 4πr2

154= 4 × 22/7 ×r2

154 - 88/7 = r2

1078/7 - 88/7 = r2

990/7 = r2

141.43 =r2

r = √141.43

r = 11.89 cm2

Volume of sphere = 4/3πr3

= 4/3 × 22/7 × (11.89)3

= 7019.83cm3

Answer 2

Step-by-step explanation:

surface area 4x22/7xr2

r2 =154x7/4x22

r2= 49/4

= 7/2

= 3.5 cm