# Please solve this

$Diagonalofasquare=\left(side\right)\sqrt{2}\phantom{\rule{0ex}{0ex}}15=\left(side\right)\sqrt{2}\phantom{\rule{0ex}{0ex}}side=\frac{15}{\sqrt{2}}=\frac{15\sqrt{2}}{\sqrt{2}\times \sqrt{2}}=\frac{15\sqrt{2}}{2}m\phantom{\rule{0ex}{0ex}}Perimeter=4\times side=4\times \frac{15\sqrt{2}}{2}=30\sqrt{2}m$

Regards,

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