jayglass16 said:
The question is:
A rectangular lot is to be fenced with 80m of fencing. What is the maximum area and what are the dimensions pf the lot?
Any ideas on how to solve?? Im Stumped
Hmm Have you studied differential calculus? Probably not, but let's make sure.
If you have not, this problem is a hard one. Let's take it in baby steps OK?
First thing in almost any problem that gives you even a bit of trouble is to "name" things with a symbol and set out the known relationships in terms of those symbols.
Let w = width of the lot.
Let d = the depth of the lot.
Let a = the area of the lot.
Let p = the perimeter of the lot.
That was the "naming" part. Now what do we know about the relationships among those symbols?
Using the symbols above, what is the perimeter of the lot?
What is the area of the lot?