# Dimensions of box that minimize the material used

1. Apr 15, 2007

### Winzer

1. The problem statement, all variables and given/known data
A box with a square base and open top must have a volume of 32,000cm^3. Find the demensions of the box that minimize the amont of material used.

2. Relevant equations
$$Sa(surface area)=4xy+x^2$$
$$Volume=x^2y$$

3. The attempt at a solution
I want to minimize Sa I am pretty sure so how do i begin?

Last edited: Apr 15, 2007
2. Apr 15, 2007

### Winzer

Never mind I figured it out.