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November 20, 2014

November 20, 2014

Posted by **steph** on Thursday, November 10, 2011 at 9:52pm.

- pre-calc please help!! -
**Steve**, Friday, November 11, 2011 at 10:43amCutting an x-cm notch from each corner of the sheet, leaves a box (20-2x)x(40-2x). We want that volume to be 1500.

(20-2x)(40-2x) = 1500

4x^2 - 120x - 700 = 0

x = -5 or 35

so, a 30x50 box will fit the bill

The solution x=35 produces a box of negative dimensions.

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