Answer:
Graph B .
Step-by-step explanation:
Graph B
Hope this helps
FH = FG - HG
FH = 53 - 40
FH = 13
840 square feet
13 x 20 = 260 x 2 = 520
10 x 12 / 2 = 60 x 2 = 120
10 x 20 = 200
520 + 120 + 200 = 840