A right triangle has a base that measure 39 inches and a height that measures 80 inches. What is the length of its hypotenuse?

The Pythagorean Theorum formula is a (squared) + b (squared) = c (squared). If you plug in the numbers, the equation is 39 (squared) + 80 (squared) = c (squared). That simplifies to 1521+6400=c (squared). Adding results in 7921=c (squared). Finally, when you take the square root of both sides, you are left with 89=c (aka the hypotenuse)