Answer:
Height = 8 yards, base = 15 yards.
Step-by-step explanation:
Let the height be x yards then the base = x+7 yards.
Area = 1/2 * base * height, so:
1/2 * (x+7) * x = 60
1/2x(x + 7) = 60 Multiply through by 2:
x(x + 7) = 120
x^2 + 7x - 120 = 0
(x - 8)(x +15) = 0
x = 8, -15
x = 8. ( we ignore the negative root).
So the base is 8+7 = 15 yards long.
