what would diameter be is this is the equation d= 4ftA. (4+4pi)ft^2B. (4-pi)ft^2C. (4+pi)ft^2D. (4-4pi)ft^2

Step 1
The area of the shaded part
= Area of a square - Area of a circle
Step 2
Find area of a square and circle.
Length of a square = 2
Area of a square =