If the area of a circle is 154 cm^2 (pi=22/7), find the radius.

A5 cm

B7 cm

C10 cm

D14 cm

Explanation

pi*r^2 = 154 => (22/7)r^2 = 154 => r^2 = 49 => r=7.

Exam Relevance

Topic: Geometry & Mensuration
Subtopic: Circles

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