area of square = 5*5 = 25 Triangle altitude: let the altitude of the equilateral triangle be x 5^2 = (2.5)^2 + x^2 x^2 = 25-(25/4) = 75/4 x = 5root(3)/2 area of triangle = (b*h)/2 b = 5 h= x = 5root(3)/2 area = [(5)*(5root(3)/2)]/2 = 25root(3)/4 ratio of area of square to area of triangle = 25/[25ro...