Qs 1 of the 2008 AP Calculus AB exam,

found here

http://www.google.ca/search?q=AP+Cal...ient=firefox-a

(1st link)

why is a volume of the solid, the integral of the height of the function squared?

(part C)

why is the volume of the pond, the integral of the height * depth?

(part D)

im not understanding the theory.