Well.
The relation between the circumference of a circle and its diameter is described by the following equation:

where d is the diameter of the circle.
For a giving diameter (d=3ft), we can substitute in the previous equation
The circumference of a circule= 3.14*3 (you can use ur calculator to find the exact number i guess it will be about 9.42 ft)
I hope it helps.
The area equals 38 because the total area is 40 and the area of the white part is 2 and 40-2=38 so the area of the green area is 38
Answer:
= 12 or
= 12i
Step-by-step explanation:
You can't take squareroot of a negative number. It's not allowed!
But for positive 144 if that's what you're asking, it will be 12.
Hope this helps!