A. Is the answer
Hope this helped :)
The key word here is *square* in "square flower garden".
So we need to find the area of the flower garden, and subtract it from the overall area of the yard. The remainder will be how much grass covers the yard.
Area of the Square flower garden:
7.5 * 7.5 = 56.25
Area of the Entire yard:
25 * 18 = 450
450 - 56.25 = 393.75 square feet of grass
The measure of angle 6 can be found by subtracting the measure of angle 13 from 90.
90-13 = 77
I believe the answer would be 4.2.
Add all the points together and divide by 10