Friday

January 30, 2015

January 30, 2015

Posted by **Jordan** on Tuesday, March 20, 2012 at 3:18am.

- math -
**Reiny**, Tuesday, March 20, 2012 at 9:06amlet the width be x

and the length be y

2x + 2y = 40 or

x+y=20 ---> y = 20-x

Area = xy = x(20-x

= 20x - x^2

Are you in Calculus?

Then the solution is very easy

If not in Calculus, complete the square of this quadratic, again a very basic problem.

Let me know what you get.

**Answer this Question**

**Related Questions**

Math - The first question is this: Helen designs a rectangle with an area of 225...

math - one of the two numbers that can be both the perimeter and the area of the...

Math - Find the Maximum area for the given perimeter of a rectangle. State the ...

geometry - given constant perimeter (people),Irene made a rectangle with an area...

calculus - Find the dimensions of the rectangle with area 256 square inches that...

2nd grade math - If you have a rectangle with 24 square units 3 lines down 8 ...

Math - There's a triangle the numbers on each sides are 22 25 and 11 What is it'...

Math - The perimeter of rectangle P is 12 feet. The perimeter of rectangle Q is ...

grade 3 math - 1) what is the greates perimeter of a rectangle with an area of ...

PreCalc - Hello and Happy Halloween! Trying to get this problem and could use ...