ANSWER:
The area of trapezoid is
![A_T=198\operatorname{cm}^2]()
Explanation:
We must divide the figure in two as follows to calculate the area of the trapezoid:
Therefore, we must calculate the area of 1 and area of 2 and the sum of both areas would be the area of the trapezoid:
For the Area 1:
![\begin{gathered} A_1=w\cdot l \\ A_1=10\cdot18 \\ A_1=180\operatorname{cm} \end{gathered}]()
For the Area 2:
![\begin{gathered} A_2=(b\cdot h)/(2) \\ A_2=(18\cdot2)/(2) \\ A_2=18\operatorname{cm}^2 \end{gathered}]()
The total area would then be:
![\begin{gathered} A_T=A_1+A_2 \\ A_T=180+18 \\ A_T=198\operatorname{cm}^2 \end{gathered}]()