Question

find the volume of a sphere whose surfce area is 154cmsquare​

Answer 1

Step-by-step explanation:

Let r cm be the radius of sphere.

Surface area of the sphere = 4πr2

⇒ 154 = 4πr2 ⇒ 4 x 22/7 x r2 = 154

r2 = 154 x 7/4 x 22 = 72/22 ⇒ r = 7/2

Volume of sphere = 4/3πr3

= 4/3 x 22/7 x 7/2 x 7/2 x 7/2 cm3

= 539/3 cm3 = 179.2/3 cm3

Answer 2

Step-by-step explanation:

Sphere

Solve for volume

V≈179.7

A Surface area 154