Answer
The area of the trapezoid is $A\approx 306\text{c}{{\text{m}}^{\text{2}}}$.
Work Step by Step
The area of the trapezoid is $A=\left( \frac{a+b}{2} \right)h$,
Where, $a=16.8\text{cm}$, $b=22.4\text{cm}$ and $h=15.6\text{cm}$
Therefore, the area of the trapezoid is
$\begin{align}
& A=\left( \frac{a+b}{2} \right)h \\
& =\left( \frac{16.8+22.4}{2} \right)15.6 \\
& =\left( \frac{39.2}{2} \right)15.6 \\
& =305.76
\end{align}$
Hence the area of the trapezoid is $A\approx 306\text{c}{{\text{m}}^{\text{2}}}$.
