fish tank;; deals with volume. :]
posted by blah. volume... .
A cylinder shaped fish talk is 40cm high and has a radius of 12cm.
The tank with be layed with a decorative gravel on the bottom.
The blue layer will be 2 cm high.
The yellow layer will be 3 cm high.
And the green layter will be 2cm high.
[assume water won't go through the gravel...okay?]
Find the number of liters of water (1000 cubic CM = 1 L) needed to fill the tank to a level that is one CM from the top before the fish are put into the tank.
*Like, what method should i use? HOW? and whats the volume formula again?? HELP.

http://www.mathsteacher.com.au/year9/ch14_measurement/18_cylinder/cylinder.htm