Asked by tolbert

Sarah has 20 m of garden edging. What are the dimensions of the rectangular garden with the greatest area can she enclose with the edging? What is the maximum area?
Answered by oobleck
the greatest area is when the rectangle is a square. That would mean each side is 20/4 = 5m
The maximum area is 5^2 = 25 m^2

Multiply any two other two numbers that add up to 10 and you will get less than 25.