Question 3
A container is filled with water to a height of 12cm. A stone of volume 585cm³ is dropped into it. Find the new height of the water if the tank has a square base of 15cm length.
**Editorial note for this self-study exercise:** Assume a tank with vertical sides and internal base side 15 cm; the stone becomes fully submerged, no water spills or is absorbed, and there is enough room for the new level. Enter the height in centimeters.
**Editorial note for this self-study exercise:** Assume a tank with vertical sides and internal base side 15 cm; the stone becomes fully submerged, no water spills or is absorbed, and there is enough room for the new level. Enter the height in centimeters.