- #1
nathangrand
- 40
- 0
A coal box, in the shape of a cuboid, is to be placed flush against a wall so that only its top, front and two ends are visible. How should the height h and the depth d be chosen so a to minimise the visible surface area A under the constraint that the box must be able to contain atleast a certain volume V of coal?
Here's how far I've got:
V=hwd (where w is the width)
Visible surafce area = 2hd + homework +wd
Here's how far I've got:
V=hwd (where w is the width)
Visible surafce area = 2hd + homework +wd