First, you must find the total area of the rectsngle which is 32ft by 16ft or 32 x16=512ft. You then find the area of the triangles which is BxH/2 or 6 x 4 x 1/2 to get 12. You then multiply 12 by 2 aince there are two triangles. You then subtract 24 from 512 to get an area of 488ft^2