SOLUTION: Four squares, each of side x cm are removed from the corners of a rectangular metal sheet of dimensions 20 cm by 12 cm to form an open box. If the volume of the box is 84x cm³, cal

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Four squares, each of side x cm are removed from the corners of a rectangular metal sheet of dimensions 20 cm by 12 cm to form an open box. If the volume of the box is 84x cm³, cal      Log On


   

Question 1006798: Four squares, each of side x cm are removed from the corners of a rectangular metal sheet of dimensions 20 cm by 12 cm to form an open box. If the volume of the box is 84x cm³, calculate the value of x.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Height of the box is x, and the other two dimensions will be (20-2x) and (12-2x).

Form the equation highlight_green%28x%2820-2x%29%2812-2x%29=84%29, simplify and solve.