Answer:
The area of the putting green is 1133.5 square feet.
Step-by-step explanation:
Area of a circle:
The area of a circle is given by:

In which r is the radius, which is half the diameter.
The circular putting green has a diameter of 38 ft.
This means that 
What is the area of the putting green?

The area of the putting green is 1133.5 square feet.
I believe this should help with this question
It is 12 sense the perimeter is the outside of the square you have to add the 2 numbers by themselves because they are the same measurement and 5+5=10 1+1=2 10+2=12