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Volume of a sphere
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Learn it Volume of a sphere: $V = \frac{4}{3}\pi r^3$. Because of the $r^3$, doubling the radius makes the volume 8 times bigger.
Example: Find the volume of a ball with radius 3 cm.
- $V = \frac{4}{3}\pi \times 27 = 36\pi$ cm³ (exact).
- With π ≈ 3.14: $36 \times 3.14 \approx 113.0$ cm³.
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