# Volume of object in water

• Apr 20th 2008, 02:42 PM
Volume of object in water
A container holds 5 liters. Initially, the container is 1/2 full of water. When an object is placed in the container, the object sinks to the bottom and the container becomes 7/8 full. What is the volume of the object in cubic centimeters? Explain your reasoning.

Any help with this question would be very appreciated! Thanks.
• Apr 20th 2008, 04:27 PM
TheEmptySet
Quote:

A container holds 5 liters. Initially, the container is 1/2 full of water. When an object is placed in the container, the object sinks to the bottom and the container becomes 7/8 full. What is the volume of the object in cubic centimeters? Explain your reasoning.

Any help with this question would be very appreciated! Thanks.

How much water is in the container. $5 \cdot \frac{1}{2}=2.5 \mbox{L}$

after the object is placed in the container. $5 \cdot \frac{7}{8}=4.375 \mbox{L}$

assuming that the object doesn't absorb any water its volume must be the difference of the two volumes so V=4.375-2.5=1.875

Good luck
• Apr 22nd 2008, 11:35 AM
earboth
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