math
posted by HELLLLLPPPPP .
If 2100 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box.
Volume(cubic centimeters) =

I got 20.4939015 and its wrong........
why doesn't ANYONE KNOW how to solve this.... :( 
If you use BobPursley's answaer, you should get a cube with side length 20.493 cm for a and a^3 = 8607 cm^3 fr the volume
Recheck my previous posted answer. I found and corrected an error. I used calculus and got a somewhat higher volume.
http://www.jiskha.com/display.cgi?id=1283843608 
THaNK YOU SO MUCH
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