Answer:
582 ft²
Step-by-step explanation:
Area of a triangle = 1/2 x base x height
Area of a rectangle = width x length
Surface area = (5 x 15) + 2(15 x 8) + 2(5 x 8) + (15 - 11) x 5 + 2(1/2 x 11 x 7) + 2(9 x 5)
= 75 + 240 + 80 + 20 + 77 + 90
= 582 ft²
