Find the perimeter of a square whose area is 1.69 $m^{2}$ .

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Solution

Area of square $= 1.69 m^{2}$

Side $= \sqrt{a r e a} = \sqrt{1.69} = 1.3 m$

$∴$ Perimeter =4 $\times$ side

$= 4 \times 1.3$

=5.2 m

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