Question 1060209
x^2 + (x+7)^2 = (x+8)^2

2x^2 + 14x + 49 = x^2 + 16x + 64

x^2 - 2x - 15 = 0

(x-5)(x+3) = 0


x = 5 ==> sides of floor are 5 m and 12 m


Area = 5(12) = {{{60}}} m^2