If the area of the square $169 c m^{2}$ , then the length of its side is

13cm

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23cm

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33cm

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43cm

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Solution

The correct option is A
13cm

Area of the square of side 'a' = $a^{2}$

Given, Area = $169 c m^{2}$

$\Rightarrow 169 c m^{2} = a^{2}$

$\Rightarrow a = \sqrt{169} = 13 c m$

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