Answer:
25
Step-by-step explanation:
a^2 + b^2 = c^2
Here, c is the hypotenuse. We'll plug the given numbers into the equation, so we get:
15^2 + 20^2 = c^2
225 + 400 = c^2
625 = c^2
To undo a squared number, you find the square root of it:
[tex]\sqrt625[/tex] = 25
Your answer is 25! If you need more help, just ask :D
