Question 387366
by Pythagoras ___ (3x)^2 + (4x)^2 = 75^2


9x^2 + 16x^2 = (3 * 25)^2 ___ 25x^2 = 3^2 * 25^2


x^2 = 3^2 * 25


x = 3 * 5 = 15


so the sides are 45 , 60 , and 75 (this is a 3-4-5 triangle)