Optimization Set-Up: Finding Optimal Dimensions for a Rectangle with Area 64m^2

  • Thread starter Thread starter Hollysmoke
  • Start date Start date
  • Tags Tags
    Optimization
Click For Summary
SUMMARY

The discussion focuses on optimizing the dimensions of a rectangle with a fixed area of 64m² to achieve the smallest possible perimeter. The user correctly sets up the equations: Area = xy, leading to y = 64/x, and Perimeter = 2x + 2(64/x). By minimizing the perimeter function for x > 0, the optimal dimensions can be determined. A graphical representation of the functions is provided, illustrating the relationship between perimeter and area.

PREREQUISITES
  • Understanding of basic algebraic equations
  • Familiarity with optimization techniques in calculus
  • Knowledge of perimeter and area calculations for geometric shapes
  • Ability to interpret graphical data
NEXT STEPS
  • Study calculus-based optimization methods
  • Learn about the properties of rectangles and their dimensions
  • Explore graphical analysis of functions
  • Investigate real-world applications of optimization problems
USEFUL FOR

Students in mathematics, particularly those studying calculus and optimization, as well as educators looking for practical examples of geometric optimization problems.

Hollysmoke
Messages
185
Reaction score
0
We're doing optimization problems and I was just wondering if I set this one up right:

What are the dimensions of a rectangle with an area of 64m^2 and the smallest possible perimeter?

Area=xy
64=xy
y=64/x
Perimeter=2x+2y
= 2x+2(64/x)
= 2x+128/x
 
Physics news on Phys.org
Simple. In this case you have just to find the minimum value of the perimeter function for values of x > 0, then you find y and have the dimensions of the rectangle with the smallest perimeter.

Anyway, here is the plot of the functions. Pink - Perimeter; Blue - Area.

http://img296.imageshack.us/img296/3231/plot553br.png
 
Last edited by a moderator:
We just started so we're not at THAT level yet, but thanks anyways D8
 

Similar threads

Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
2
Views
1K
Replies
10
Views
5K
  • · Replies 9 ·
Replies
9
Views
3K
Replies
5
Views
2K
  • · Replies 14 ·
Replies
14
Views
2K
Replies
14
Views
2K
  • · Replies 25 ·
Replies
25
Views
2K