137.1
You would find the area of the semi circle by using the circle formula and dividing by 2, which would be 8
Then find the area of the rectangle, which would be 112.
Answer:
R is a function.
Step-by-step explanation:
We have that
[the area of the trapezoid]=[area of rectangle]+2*[area of triangle]
[the area of the trapezoid]=[10*9]+2*[9*9/2]
[the area of the trapezoid]=[90]+2*[40.5]= 171 units²
see the attached figure
the answer is 171 units²