Question

A diagonal of a square mirror is 10 inches long. What is the length in inches of each side of the mirror

Answer 1

Answer:

Step-by-step explanation:

a square has sides that are all the same length.  That means that if we have a diagonal of a square that measures 10, using Pythagorean's Theorem,

$x^2+x^2=10^2$ and

$2x^2=100$ and

$x^2=50$ so

$x=\sqrt{50}=\sqrt{25*2}=5\sqrt{2}$