Posted by **Jess** on Sunday, August 21, 2011 at 2:53am.

Explain why the perimeter:Area ratio value can be used to understand cost effectiveness

- Math -
**Damon**, Sunday, August 21, 2011 at 3:23am
perimeter defines the length and therefore cost of fencing.

area defines the size of the enclosure, for example how much grass for the cows to munch.

the minimum fence length for maximum grass is the perimeter to area ratio.

Example for rectangle:

What are the dimensions of a rectangular field that surrounds the maximum area with 100 meters of fence?

x+y = 50

A = x y

if it is square:

25 on a side

area = 625

if one side is longer, for example 10 by 40

area = 400

least fence cost for square, x/y = 1

perimeter/area = 4 x/x^2 = 4/x

- Math -
**bharat**, Sunday, August 21, 2011 at 3:25am
to find the total area under sq.feet

## Answer This Question

## Related Questions

- Math - Find the perimeter and the area of the rectangle. I cant upload pics. Its...
- math - one of the two numbers that can be both the perimeter and the area of the...
- calculus II - Suppose R is the region in the plane enclosed by y = x2 and y = 4...
- Math - One of two similar triangles has an area of 1/4 times that of the other. ...
- math - At Frugal Foods a loaf of bread cost about $1 in 1980. In 2013, the loaf ...
- Information Technology - explain how facebook has used two (2) design elements ...
- raiots and perimeter - you have to figures that are similar, large one is 28yds...
- Math - I have the ratio for this question but I need help with finding the value...
- Math - There's a triangle the numbers on each sides are 22 25 and 11 What is it'...
- math - At Frugal Foods a loaf of bread cost about $1 in 1980. In 2013, the loaf ...

More Related Questions