Posted by **Yoona** on Sunday, December 18, 2011 at 11:28pm.

1. A sheet of cardboard 3 ft. by 4 ft. will be made into a box by cutting equal-sized squares from each corner and folding up the four edges. What will be the dimensions of the box with largest volume?

so I did V=lhw

and found l=4-2h and w=3-2h

I also distributed them in the equation

I found V= and found the derivative

v'=12-28h+12h^2 and I set it equal to zero

from there...I dont know whay to do.

## Answer this Question

## Related Questions

- calculus - 1. A sheet of cardboard 3 ft. by 4 ft. will be made into a box by ...
- math - An open box is made from a rectangular piece of cardboard, with ...
- calculus - By cutting away identical squares from each corner of a rectangular ...
- math - An open-topped box is made from a rectangular piece of cardboard, with ...
- calculus optimization problem - by cutting away identical squares from each ...
- Calculus 1 - A box with an open top is to be constructed from a rectangular ...
- Calculus - An open top box is made by cutting congruent squares from the corners...
- Maths - Algebra - Boxes are made by cutting 8cm squares from the corners of ...
- Calculus - By cutting away identical squares from each corner of a rectangular ...
- calculus - a box with no top is to be built by taking a 12''-by-16'' sheet of ...

More Related Questions