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Small Michael Cho

Budget: $15

Solved!

A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a single strand of electric fence. With 1400m of wire at your disposal, what is the largest area you can enclose, and what are its dimensions?

Answer

Small Tutor Jack Kim

Let r be the length of the rectangle along the river and s be the length of the o...