A circular park has radius $12\text{m}$. The park is to be surrounded by a fence. Find the length of the fence required, correct to two decimal places.

Step-by-step solution

1. The length of the fence equals the circumference of the circle: $C=2\pi r$.
2. Substitute $r=12\text{m}$: $C=2\pi \times 12=24\pi$.
3. Use $\pi \approx 3.1416$ to evaluate: $24\pi \approx 24\times 3.1416=75.3984\text{m}$.
4. Round to two decimal places: $75.40\text{m}$.

Concept tested: Circumference of a circle

Published 28 September 2026 · How this solution was prepared and checked

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