circumference of the circle = 4*pi cm
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The formula for the circumference of a circle is C = πd, π = 3.142, d = 4cm C = 3.142 x 4cm C = 12.568cm
Circumference = Pi X Diameter = 3.1415 X 4cm = 12.566cm
C= pi * D This is the formula for circumference.
The circumference of a circle with a radius of 4cm is: 25.13 cm (r x 2 x pi)
radius = 2cm circumference=2(pi)r 2(22/7)2 88/7 12 4/7cm