Answer:
2,376 square ft
Step-by-step explanation:
24*9*0.5*2=216(Area of two triangles)
40*15*2=1,200(Area of two rectangles on the sides)
24*40=960(Area of the third rectangle)
You add everything up, 960+1,200+216 and you get 2,376 square feet.
Hope this helps!~ :)