Using the Pythagorean theorem find the length of the leg of a right triangle if the other leg is 8 feet long and the hypotenuse is 10 feet long

So Pythagorean Theorem say that c^2 = a^2 + b^2

you were given the a and b so sub those in and you get

c^2 = 8^2 + 10^2

c^2 = 164

take the square root of both sides and you get c = 12.81

so the answer is 12.81