Question

Find the diagonal of a square whose area is 64m².

Answer 1

Diagnol of a square is
$\sqrt{2} a$
Where a is the side of the the square
Area of square is
${a}^{2}$
${a}^{2} = 64 \\ a = 8$
Diagnol is
$8 \sqrt{2}$

Answer 2

the area of square is 64m squre
so, ATQ
64m square = s * s
s = 8