Answer
Area = 28$m^{2}$
Work Step by Step
The area of the trapezoid is equal to $\frac{1}{2}$ $\times$ (b + B) $\times$ h
Area = $\frac{1}{2}$ $\times$ (5m + 9m) $\times$ 4m
Area = $\frac{1}{2}$ $\times$ 14m $\times$ 4m
Area = 28$m^{2}$
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