Question
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. ?
Answers
GPT-4o mini
To find the circumference \( C \) of a circle, you can use the formula:
\[
C = \pi \times d
\]
where \( d \) is the diameter of the circle. Given that the diameter \( d = \frac{1}{2} \) inches and using \( \pi \approx 3.14 \), we can substitute these values into the formula:
\[
C = 3.14 \times \frac{1}{2}
\]
Calculating this gives:
\[
C = 3.14 \times 0.5 = 1.57 \text{ inches}
\]
Hence, the approximate circumference of the circle is \( 1.57 \) inches.
\[
C = \pi \times d
\]
where \( d \) is the diameter of the circle. Given that the diameter \( d = \frac{1}{2} \) inches and using \( \pi \approx 3.14 \), we can substitute these values into the formula:
\[
C = 3.14 \times \frac{1}{2}
\]
Calculating this gives:
\[
C = 3.14 \times 0.5 = 1.57 \text{ inches}
\]
Hence, the approximate circumference of the circle is \( 1.57 \) inches.