what is the area of the composite figure? I know how to find the area of a triangle but not a circle

The composite figure consist of two figure one triangle with base b = 8 ft and height h = 7 ft and other semi circle with diameter of d = 8 ft.
Determine the area of composite figure.
[tex]\begin{gathered} A=\frac{1}{2}\cdot b\cdot h+\frac{\pi(d)^2}{8} \\ =\frac{1}{2}\cdot8\cdot7+\frac{\pi(8)^2}{8} \\ =28+3.14\cdot8 \\ =28+25.12 \\ =53.12 \end{gathered}[/tex]So area of composite figure is 53.12 feet square.