---------------------------------------------- Area of the bottom rectangle: ---------------------------------------------- Area = 15 x 20 = 300 ft²
---------------------------------------------- Area of the two triangles: ---------------------------------------------- Area = 2 [ 1/2 x 15 x 8] = 120 ft²
---------------------------------------------- Area of the top rectangle: ---------------------------------------------- Area = 20 x 17 = 340 ft²
---------------------------------------------- Area of the side rectangle: ---------------------------------------------- Area = 8 x 20 = 160 ft²
---------------------------------------------- Total Area ---------------------------------------------- 300 + 120 + 340 + 160 = 920 ft²
---------------------------------------------- Answer: Total Surface area = 920 ft² ----------------------------------------------
