A horse is tied to the outside corner of a 20-foot by 10-foot rectangular barn. What is the maximum area the horse can graze outside if the rope has length L? Solve for L=5 and L=25, and find exact values. Scroll down to read the answer, or watch the video below to see how it's solved.

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Note: There are a few errors in the video below.

- At 5:40, it should say "40 squared" instead of "40."
- At 10:34, it should say "quadrilateral" instead of "rectangle."
- At 12:44, it should say "large triangle" instead of "large rectangle."
- At 14:55, the area is an approximate numerical value, not an exact equals sign.