r = \frac{31.4}{2\pi} = \frac{31.4}{6.28} \approx 5 \text{ cm}

Mon, 04 May 2026 00:30:06 +0000

# Understanding the Radius Calculation: r = 31.4 / (2π) ≈ 5 cm When working with circular shapes in geometry, radius calculations are essential for areas, circumference, and volume estimations. One interesting fraction often highlighted in practical measurements is: r = 31.4 / (2π) ≈ 5 cm At first glance, this formula may look mathematical but has real-world relevance—especially in construction, gardening, physics, and design. In this SEO-optimized article, we’ll break down this radius calculation, explain its meaning, and explore how it applies in everyday contexts.