volume_mute
Circumference β Decimal Approximation
publish date:Β 2026/05/17 03:18:34.011402 UTC
volume_mute
The exact circumference of the circle is \(10\pi\) cm. Using \(\pi \approx 3.14\), what is the approximate circumference?
Correct Answer
31.4 cm
Explanation
Replace \(\pi\) with \(3.14\) in the exact answer:
\[C \approx 10 \times 3.14 = 31.4 \text{ cm}\]
To multiply by 10, move the decimal point one place to the right: \(3.14 \to 31.4\).
Reference
Mathematics for college students