- #1
sidnygte
- 4
- 0
Homework Statement
I am given an 8in x 8 in piece of paper and I need to build a pyramid with a square base with the greatest volume.
Homework Equations
V = 1/3 * x^2 * h
b = base length
h = height length
I'm trying to get everything in terms of x, which is the length of the base of the square I need to make.
The slant length is l
w(length of the entire slant) = 2l + xhttp://i39.tinypic.com/2me4jsw.jpg
Oh and l = h^2 + x^2/2. height squared + one half x^2.
The Attempt at a Solution
This is an optimization problem, so I put everything in terms of one variable, and then get the derivative
I just don't know if this is the derivative.
http://i44.tinypic.com/2rh07f5.jpg