SOLUTION: Please help me how to solve this problem. The width of a rectangle is fixed at 20 cm and the perimeter can be no greater than 100 cm. Find the maximum length of the rectangle.

Question 1051086: Please help me how to solve this problem.
The width of a rectangle is fixed at 20 cm and the perimeter can be no greater than 100 cm. Find the maximum length of the rectangle.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
The perimeter of a rectangle is,

Substituting,

So the maximum length is 30 cm.
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