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

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