Q18 of 79 Page 245

If the surface area of a sphere is 36π cm2, then the volume of the sphere is equal to

Let radius of sphere be r cm


Surface Area of Sphere = 4πr2


Surface Area of Sphere = 36π cm2


So we can say,


4πr2 = 36π


⇒ r2 = 9


⇒ r = 3 cm


Volume of Sphere


⇒ Volume of Sphere


⇒ Volume of Sphere = 4π × 32


⇒ Volume of Sphere = 36π cm3


Out of all the four Options,


Correct Option : B

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