Q17 of 79 Page 245

If the surface area of a sphere is 100π cm2, then its radius is equal to

Let radius of sphere be r cm


Surface Area of Sphere = 4πr2


Surface Area of Sphere = 100π cm2


So we can say,


4πr2 = 100π


⇒ r2 = 25


⇒ r = 5 cm


Out of all the four Options,


Correct Option: C

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