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Q.

The radius of a circle is 7 cm, then its area is

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a

140 $c m^{2}$

b

162 $c m^{2}$

c

164 $c m^{2}$

d

154 $c m^{2}$

answer is B.

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Detailed Solution

$Area = {πr}^{2} = \frac{22}{7} x 7 x 7 = 154 {cm}^{2}$

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