Answer:
7n + 18
Step-by-step explanation:
it goes up in 7 so 7n and 25-7 =18
Given data:
The given composite figure.
The given radius is r=(7 m)/2 =3.5 m.
The length of the rectangle is,

The area of the given figure is,

Thus, the area of thhe composite figure is 38.51 sq-meter.
X+15=40 x stands for Donnies height
4 is B, 5 is D, hope this helps :)