Question 755378
height = x
base = x - 1


area = 1/2 * (height) * (base)
66 = 1/2 * x(x-1)
132 = x^2 - x
0 = x^2 - x - 132
0 = (x - 12)(x + 11)


Distance must be positive, so x = 12. The height is 12 m and the base is 11 m.