I need help finding the area of the pentagon please.

Given:
To Find:
The area of a given diagram
Formula:
[tex]\begin{gathered} \text{Area of a rectangle=l}\times w \\ \text{Area of a triangle=}\frac{1}{2}\times base\times height \end{gathered}[/tex]Explanation:
Area of a given diagram can be found by the sum of two shapes that is rectangle and triangle.
[tex]\begin{gathered} \text{Area}=Area\text{ of a rectangle+Area of a triangle} \\ =(8\times7)+(\frac{1}{2}\times7\times3) \\ =56+(\frac{21}{2}) \\ =56+10.5 \\ =66.5cm^2 \end{gathered}[/tex]Final Answer:
[tex]\text{Area}=66.5cm^2[/tex]