Rena L. answered 06/25/20
Carnegie Mellon Univ. Tutor Specializing in SAT and AP Prep
With a little bit of algebra, we can conclude that the three sides of the triangle are c = 8 feet (hypotenuse), a = x, and b = 4x. Using the pythagorean theorem (c2 = a2 + b2) and substitution, we are left with 64 = 16x2 + x2.
We can further simplify this equation to 64 = 17x2. Solving for x, we are left with x = √64/17. Now we know that x = a ≈ 1.94 feet and b ≈ 7.76 feet.