Puzzles & Quizzes

Can You Solve The River Fence Puzzle?

Can you solve the river fence puzzle? This math problem has very practical applications in the real world, and can be solved with both geometry and calculus. Imagine you have 100 units of fencing material. You must box off an area of land next to a river, with the river acting as one side of the box. How can you arrange the 100 units of fencing to box off the largest possible area of land next to the river? If you think you have the correct answer, how do you know it's correct?

Key Facts In This Video

  1. The area of a rectangle is length times width. 01:04

  2. The perimeter of a rectangle is two times the length plus two times the width. 02:33

Written by Curiosity Staff January 4, 2016

Curiosity uses cookies to improve site performance, for analytics and for advertising. By continuing to use our site, you accept our use of cookies, our Privacy Policy and Terms of Use.