SOLUTION: Old MacDonald wants to build a rectangular pen for his animals. He has 40m of fencing and he plans to use the barn as one side for his pen. What dimensions will give the maximum ar

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Old MacDonald wants to build a rectangular pen for his animals. He has 40m of fencing and he plans to use the barn as one side for his pen. What dimensions will give the maximum ar      Log On


   

Question 121509: Old MacDonald wants to build a rectangular pen for his animals. He has 40m of fencing and he plans to use the barn as one side for his pen. What dimensions will give the maximum area?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
10x20x10=10*20=200 ft^2 is the maximum area.
try 9x22x9=198
try 11x18x11=198