Need help answering this problem

[Richmaster5000]

This is a word problem and i have no idea how to start it or even any idea so if you can help ASAP it would be appreciated!!


A Track and field playing area is in the shape of a rectangle with semicircles at each end(see picture below). The inside perimeter of the track is to be 1500 meters.
[attachment=0:2rs1r6y4]Math.jpg[/attachment:2rs1r6y4]

[*]What should the dimensions of the rectangle be so that the area of the rectangle is a maximum?
[*]Provide the area function used and graph it. Identify the maximum and interpret what it means


If you can help i greatly appreciate it!!!!!!!!

 

[stapel]

What is the formula for the perimeter P of a rectangle with width w and length L?

If P = 1500, then what is L, in terms of w?

Using the width as the diameter of the half-circles, what is the circumference of the two half-circles, in terms of w?

 

[Richmaster5000]

There is no formula at all that is why i am soo lost at this problem!!!

 

[stapel]

You're expected to know these formulas. Since you don't know them, you'll need to review. You should be able to find them in your book (possibly in an appendix) and online. Your household dictionary may also have them. :wink:

 

[Richmaster5000]

Is it LxWxH

 

[stapel]

Look up "perimeter" and "rectangle" (not "volume" and "prism"), or do a search for these terms. Then memorize the correct formula. :wink: