Question

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

Answer 1

Answer:

It's a right triangle, whose catheti are the sides of the square, and whose hypotenuse is the diagonal of the square. If you like it, you can simplify √50 into √25⋅2=√25⋅√2=5√2 .

Answer 2

Answer:

$5 \sqrt{2}$