Find the area of the square whose perimeter is $40 c m$ .

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Solution

Perimeter of the square $= 4 a$
Where 'a' is the side of the square

$\Rightarrow 40 = 4 a$
$\Rightarrow a = 10 c m$

Area of the square $= a^{2}$
$= 10^{2}$
$= 100 c m^{2}$

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Perimeter of the square =4aWhere 'a' is the side of the square⇒40=4a⇒a=10 cmArea of the square =a2 =102 =100 cm2

Find the area of the square whose perimeter is $40 c m$ .

Perimeter of the square $= 4 a$
Where 'a' is the side of the square

$\Rightarrow 40 = 4 a$
$\Rightarrow a = 10 c m$

Area of the square $= a^{2}$
$= 10^{2}$
$= 100 c m^{2}$