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Areas of Different Plane Figures

Find the area...

Question

Find the area of a square, the length of whose diagonal is $25 c m$

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Solution

We know that,
Area of square $= [{(D i a g o n a l)}^{2}] \div 2$
$= (25 \times 25) \div 2 s q . c m .$
$= 625 \div 2 s q . c m .$
$= 312.5 s q . c m .$
Then,
We get area of a square is $312.5 s q . c m .$

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