Circumference is the perimeter of a circle
Diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints are on the circle
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The circumference is the distance AROUND a circle. The diameter is the distance ACROSS a circle. The radius is the the distance FROM THE CENTER of the circle (same thing as one-half of the diameter).
The formula for the circumference of a circle is the same, whatever its diameter. Circumference = pi*diameter.
No. Diameter is the distance across. Circumference is the distance around.
Circumference equals pi (which is about 3.14) times diameter (or pi times 2 times the radius, which is the same thing). Pi times 4' = 12' 6.8"
The formula for the circumference of a circle is: C=2r(pi) Since diameter is the same as 2r, the circumference is 3476(pi).