# HTML tags are messed up - reposting

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Posted by Subhotosh Khan on October 26, 2002 at 23:54:15:

In Reply to: Re: more help please ok i got alot more stuff posted by Subhotosh Khan on October 26, 2002 at 23:51:01:

: : solve
: : A machine produces open boxes using sqaure sheets of plastic. The machine cuts equal sized squares measuring 3 inches on a side from each corner of the sheet, ,and then shapes the plastic into an open box by turning up the sides. If each box must have a volume of 675 cubic inches, find the length of one side of the open box.

: Since the open box is made from square sheet and cutting off square pieces
: - the bottom of the box must be square.

: Let the side of the bottom = x

: bottom area = x^2

: depthe of box = 3

: Volume of box = 3*x^2

: So:

: 3*x^2 = 675

: x^2 = 225

: x = 15

: : solve
: : 4x^(7/2)-8=0

: 4x^(7/2)-8=0

: 4x^(7/2)=8

: x^(7/2)=2

: x = (2)^(2/7)

: Use a calculator to solve it

: : solve by substitution
: : x^(2/3)+2x^(1/3)-8=0
Use calculator
: : answers a){-4,2} b){-64,8} c){-8,64} d){-2,4}

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