sides
13 X 42 = 546 square foot there are four of these
546 X 4 = 2184 square foot.
triangles
A= 0.5 X b X h
0.5 X 13 X 12 = 78 square foot again there are four of these 78 X 4 = 312 square foot
2184 + 312 = 2496 square foot
2496/277 = 9.010
9 gallons of paint will need to be purchased.
