SOLUTION: Use quadratic formula and a calculator to solve. Round decimal approximations to the nearest hundredth.
A rectangular piece of cardboard is made into a box by cutting 3 inches
Question 1029169: Use quadratic formula and a calculator to solve. Round decimal approximations to the nearest hundredth.
A rectangular piece of cardboard is made into a box by cutting 3 inches squares from each corner and then folding the cardboard up. The length of the cardboard box is 3 inches more than its width. If the volume of the box is 540 inches^3, what are the dimensions of the original piece of cardboard? Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Number Revision
Box height 3 3
Base length L-2*3 L-6
Base width w-2*3 w-6
Length description L-2*3=3+(w-2*3) L-6=w-3
volume is
Use the description's relation between L and w to substitute for one of them.
---------* You will use this again further down to finish.
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General solution formula for quadratic equation:
Discriminant, ;