Answer:
$6388
Step-by-step explanation:
Break the total area into 2 rectangles like you did with the red line. Figure the area of each rectangle and add them together to get the total area.
total area = (13)(15) + (12)(7) = 279 ft^2 (get the 7 by subtracting 13 from 20)
279 ($22) + $250 = $6388
