Posted by BJ on Sunday, September 19, 2010 at 11:05am.
An open box is to be made from a square piece of cardboard, 32 inches on a side, by cutting equal squares with sides of length x from the corners and turning up the sides (see figure below). Determine the function, V, in terms of x, that represents the volume of the box.
A. 2x^3+32x^2
B.4x^3+64x^2
C.4x^364x^2+32x
D.4X^3+64x^232x
E.4x^3128x^21024x

calculus  Reiny, Sunday, September 19, 2010 at 11:10am
volume = x(322x)^2
which of your answers matches the above once you expand it?