Question

Find the radius of a sphere whose surface area is 154 cm² . Also find the volume of this sphere.​

Answer 1

Answer:

RADIUS = 3.5 CM AND VOLUME = 179.69 CM³

Step-by-step explanation:

AREA = 154 CM²

       154 = 4πR²

        22 X 7 = 4 X 22 X R² / 7

          R² = 49/4

            R = 7/2 CM = 3.5CM

VOLUME = 4/3 π R³

                = 4/3 X 22/7 X 7/2 X 7/2 X 7/2

 VOLUME = 179.69 CM³