Volume of Cone
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Theorem
Let $K$ be a cone whose base is of area $A$ and whose height is $h$.
Then the volume of $K$ is given by:
- $V_K = \dfrac {A h} 3$
Proof
Let $V_K$ be the volume of $K$.
Let $V_C$ be the volume of a cylinder of base $A$ and of height $h$.
From Volume of Cylinder:
- $V_C = A h$
From Volume of Cone is Third of Cylinder on Same Base and of Same Height:
\(\ds V_K\) | \(=\) | \(\ds \dfrac {V_C} 3\) | ||||||||||||
\(\ds \) | \(=\) | \(\ds \dfrac {A h} 3\) |
$\blacksquare$
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): cone
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): cone