Posted by Rachael on Wednesday, January 14, 2009 at 10:35pm.
a stone is thrown into a cylindrical water tank 2 feet in diameter, causing it to rise 1.5 inches. what is the volume of the stone?

alegebra  Ms. Sue, Wednesday, January 14, 2009 at 10:36pm
Does the tank or the water rise? Your question doesn't make that clear.

alegebra  Mackenzie, Wednesday, January 14, 2009 at 10:39pm
the water rises

alegebra  Reiny, Wednesday, January 14, 2009 at 10:40pm
the change in the volume of the water in the tank equals the volume of the stone
so volume change = Pi(r^2)h, where r is the radius and h is the height
so V = Pi(24^2)(1.5) cu inches
= appr. 2714 cu inches. 
alegebra  Anonymous, Monday, November 30, 2015 at 6:53pm
24 inches isn't that the diameter