SOLUTION: a rectangular open-topped box is to be constructed out of 20-inch-square sheets of thin cardboard by cutting x inch squares out of each corner and banding the side up. Express each

Algebra ->  Rectangles -> SOLUTION: a rectangular open-topped box is to be constructed out of 20-inch-square sheets of thin cardboard by cutting x inch squares out of each corner and banding the side up. Express each      Log On


   

Question 1041508: a rectangular open-topped box is to be constructed out of 20-inch-square sheets of thin cardboard by cutting x inch squares out of each corner and banding the side up. Express each of the following quantities as a polynomial in both factored and expanded form.
1. the area of cardboard after the corners have been removed.
2. the volume of the box.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
AREA
20%5E2-4x%5E2

VOLUME
x%2820-2x%29%5E2

Do the necessary multiplications if you want polynomials.