The answer to your question is 1.57
C=πd
π≈3.14
If d=1/2 inches
C=(1/2 inches)*π
=1/2π inches
The circumference of a circle with a diameter of 2 1 inch is approximately 1.57 inches. This is calculated using the formula C = π d , where π ≈ 3.14 .
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