Isoperimetrical Problem
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Classic Problem
What shape is the largest area that can be surrounded by a plane curve of a given length?
Solution
The solution is: a circle.
Proof
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Also see
- Dido's Problem, which is a variant of this.
Sources
- 1963: Charles Fox: An Introduction to the Calculus of Variations (2nd ed.) ... (previous) ... (next): Chapter $\text I$. The First Variation: $1.1$. Introduction