Answer:
Step-by-step explanation:
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Find the area of all the separate figures and add them together
area of rectangle = length x width
11 x 3 = 33 ft
area of square = a^2
3^2 = 9ft
area of triangle = base x height over 2
11 x 3 = 33
33 over 2 = 16.5 ft
33 + 9 + 16.5 = 58.5 ft ^ 2
Simplify the right hand side:

Expand the left hand side:

Subtract 2x from both sides:

Divide both sides by 4:
