Posted by **Hector** on Friday, January 21, 2011 at 5:16pm.

Help!!!

A rectangle piece of cardboard twice as long as wide is to be made into an open box by cutting 2 in. squares from each corner and bending up the sides. (a) Express the volume V of the box as a function of the width W of the piece of cardboard (b) find the domain of the function.

Thanks!

- calculus -
**MathMate**, Friday, January 21, 2011 at 9:40pm
Length = 2W (inches)

Width = W (inches)

Height = 2 inches

V(W)=Length*Width*Height

=2W*W*2

=4W²

The minimum width of the box is 4 inches, which results in a box of zero volume.

Thus the domain of V(W) is [4,∞].

- calculus -
**Hector**, Sunday, January 23, 2011 at 10:50pm
Thanks MathMate!

- factors -
**racky**, Thursday, September 29, 2011 at 9:41pm
well i would find a factor of something by dividing numbers from 1 to 10 and figure it out by dividing it up

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