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to determine the circumference of a circle we use C= 2pir.
r = D/2 so substitute this for r in the equation with C = to 5
5= 2pi(D/2)
5 = (2piD)/2
5 = piD
D = 5/pi
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to determine the circumference of a circle we use C= 2pir.
r = D/2 so substitute this for r in the equation with C = to 5
5= 2pi(D/2)
5 = (2piD)/2
5 = piD
D = 5/pi