Notice that we have the following measures for the figure in the picture:
Then, we can find the area of each figure as follows:
For figure A:
for figure B:
for figure D:
finally, for figure C we have:
then, since we have two triangles (figure D), the total area of D is:
[tex]A=1+1=2[/tex]
and the total area is:
[tex]A_t=2+18+3+2=25[/tex]
