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Sphere Radius Formula

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Sphere Formulas
r = ∛(3V / 4π) | r = d / 2 | r = √(A / 4π)
Calculated Radius (r)
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Formula & Variables

V = ⁴⁄₃ π r³
V = volume of sphere
r = radius of sphere
π ≈ 3.1416 (approx)

Example

Radius = 5 cm
V = ⁴⁄₃ × 3.1416 × 5³
V = ⁴⁄₃ × 3.1416 × 125
V = 523.60 cm³

Understanding Sphere Radius Formula

Radius is calculated from volume (r = ∛(3V/4π)), surface area (r = √(A/4π)), or diameter (r = d/2).

Worked Example

From volume V = 523.60 cm³: r = ∛(3 × 523.60 / 4π) = 5.00 cm.

Common Questions About Sphere Radius Formula

r = (3V / 4π)^(1/3).

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