alleryThe radius of a circle whose area is 154 cm^2 is (use pi = 22/7)
A9 cm
B6 cm
C7 cm
D8 cm
Answer & Solution
Correct answer: C. 7 cm
Area = pi r^2 = 154. So r^2 = 154 x 7 / 22 = 49, giving r = 7 cm.
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