The circumference of a circle equals pi times the diameter. Using 3.14 to approximate pi, what is the approximate circumference in inches of a circle with a diameter of 1\2 in.?

1 answer

To find the circumference of a circle, you can use the formula:

\[ C = \pi \times d \]

where \(C\) is the circumference and \(d\) is the diameter of the circle.

Given the diameter \(d = \frac{1}{2}\) inch, and using \( \pi \approx 3.14 \):

\[ C = 3.14 \times \frac{1}{2} \]

Calculating this gives:

\[ C = 3.14 \times 0.5 = 1.57 \text{ inches} \]

Therefore, the approximate circumference of the circle is \(1.57\) inches.