Answer: 27.8 Gallons
Step-by-step explanation:
2(60x36 + 60x11 + 11x36)
2(3216)
6432
6432/231
27.8441558442
Round to nearest tenth
27.8
2x+2 would be the expression
We have two triangles with base 9ft and height 12.3ft and two triangles with base 11ft and height 11.9ft.
The formula of an area of a triangle:

Triangle #1:
b = 9ft and h = 12.3ft. Substitute:

Triangle #2:
b = 11ft and h = 11.9ft. Substitute:

The Lateral Area:

<h3>Answer: B. 241.6 ft².</h3>