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Q.

If the area of a square is 49x2 sq mt, then perimeter of the square is

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a

$28 \times m$

b

$21 \times m$

c

$7 \times m$

d

$14 \times m$

answer is B.

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Detailed Solution

$\begin{array}{l} a^{2} = 49 x^{2} \\ a = 7 x \\ p = 4 \times 7 x = 28 x \end{array}$

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If the area of a square is 49x2 sq mt, then perimeter of the square is