The surface area of a sphere is 616 cm². Find its radius. (Use pi = 22/7)

Topic: Geometry &amp; Mensuration
Subtopic: Spheres

A7 cm

B14 cm

C21 cm

D28 cm

Explanation

Surface Area = 4 * pi * r^2 => 616 = 4 * (22/7) * r^2 => 616 = (88/7) * r^2 => r^2 = (616 * 7) / 88 = 49 => r = 7 cm.

Exam Relevance

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