Question

In a 45-45-90 triangle, what is the length of the hypotenuse if the length of one of the legs is 5 in.?

Answer 1

You could use the Pythagorean Theorem to find this. Since the  two legs will be the same length:
5² + 5² = c²
25 + 25 = c²
50 = c²
√50 = √c²
5√2 = c
so the hypotenuse length is 5√2