Question

20. Find the length of the diagonal of a square of area 200 cm.
[Hint. x (diagonal)2 = 200]
2
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Answer 1

let the side of the square be x

$= > area = 200 \\ = > {x}^{2} = 200 \\ = > x = \sqrt{200} \\ = > x = 10 \sqrt{2}$

we know

$= > diagonal = \sqrt{2} \times side \\ = > diagonal= \sqrt{2} \times 10 \sqrt{2} \\ = > diagonal= 20 \: cm$

= √2 x side

Answer 2

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