Question

The length of the diagonal of a square of side 12 cm is

Answer 1

Length of the side of a square is 12 cm

Square has equal sides

So all sides are equal

The length of the diagonal is ------

$\sqrt{(12)^{2} + (12)^{2} } \\ = \sqrt{144 + 144 } \\ = \sqrt{288} \\ = 12 \sqrt{2}$

Hope it will help you .