Question

find the side and perimeter of a square whose area is 158.76cm square​

Answer 1

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Step-by-step explanation:

$\\ let \: the \: side \: of \: square \: be \: a \\ area \: of \: square = a \times a = {a}^{2} \\ 158.76 = {a}^{2} \\ a = \sqrt{158.76} \\ a = \sqrt{ \frac{15876}{100} } \\ a = \frac{126}{10} \\ a = 12.6cm \\ perimeter \: of \: square = 4 \times side \\ = 4 \times 12.6 \\ = 50.4cm$