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Perimeter of a Square

Find the leng...

Question

Find the length of the diagonals of a square whose each side is $6$ cm.

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Solution

R.E.F image
Pythagoras theorem $\Rightarrow$
$A B^{2} + B C^{2} = A C^{2}$
$\sqrt{6^{2} + 6^{2}} = A C$
$A C = 6 \sqrt{2} =$ diagonal

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