Question 1171161: The surface area of a closed box is 1642 square centimeters. If the length is x centimeters, the width is 6 centimeters less than twice the length and the height is 4 centimeters more than the length, calculate the value of x.
Answer by ikleyn(52786)   (Show Source):
You can put this solution on YOUR website! .
Under given conditions, the surface area equation is
2*((x*(2x+6) + x*(x-4) + (x+6)*(x+4)) = 1642 cm^2.
Reduce it to the standard form of a quadratic equation, and then solve it,
using the quadratic formula or factoring.
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