Question

If the diagonal of a square is $10cm,$ then the side of the square is

Answer 1

IN $\Delta ABCA{C}^2=A{B}^2+B{C}^2=a^2+a^2=2a^{2}100=2a^2\Rightarrow a^2=50a=\sqrt{50}=5\sqrt{2}cm$

$\therefore$ Side of the square $5\sqrt{2}cm$