Wednesday

January 28, 2015

January 28, 2015

Posted by **Carlee** on Sunday, December 16, 2012 at 4:33pm.

- math -
**Steve**, Sunday, December 16, 2012 at 5:40pmv = x(40-2x)(48-2x) = 4x(20-x)(24-x)

v=0 at x=0,20,24, so you know there will be a max for 0 < x < 20

If you haven't had some calculus, this will be hard to find; you may have to do some probing around x=10 and try some values.

If calculus is in your bag of tools, then you know that

dv/dx = 4(x^2 - 88x + 480)

dv/dx=0 when x = 4/3 (11-√31) = 7.24

So, the box is 32.76 x 40.76 x 7.24

**Answer this Question**

**Related Questions**

calculus optimization problem - by cutting away identical squares from each ...

calc - by cutting away identical squares from each corner of a rectangular piece...

calculus - By cutting away identical squares from each corner of a rectangular ...

math - By cutting away identical squares from each corner of a rectangular ...

Calculus - By cutting away identical squares from each corner of a rectangular ...

math - a piece of cardboard is twice as it is wide. It is to be made into a box ...

Algebra - A rectangular piece of cardboard is 15 inches longer than it is wide. ...

Math - Arlan needs to create a box from a piece of cardboard. The dimensions of...

math - An open box is made from a rectangular piece of cardboard, with ...

Geometry - On a rectangular piece of cardboard with perimeter 11 inches, three ...