Question

In the following figures, find the area of the shaded portions.

Answer 1

$\begin{array}{c}Areaof1stdiagram\\ 10\times 18-\frac{1}{2}\left(8\times 10\right)-\frac{1}{2}\left(6\times 10\right)=110c{m}^3\\ Areaof2nddiagram\\ 20\times 20-\frac{1}{2}\left(10\times 10\right)-\frac{1}{2}\left(10\times 20\right)-\frac{1}{2}\left(10\times 20\right)\\ =150c{m}^2\end{array}$