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How is volume measured? (Continued)

Answer: If you said 1 million, you were right!  Excellent!
But can you show how you got the answer?

1 centimeter =   1     meter             Therefore: 100 centimeters = 1 meter
                       100
                                            Or   1 meter = 100 centimeters    

Then, 1 cubic meter = 100 cm x 100 cm x 100 cm 
                         = (100) x (100) x (100) cm x cm x cm

                         = 1,000,000 cm³

For objects that have unusual shapes, volume must be measured in another way.
Take the human body, for instance.  We all have different shapes, so there is no formula we can use to measure our volume! 

But there is another way we can measure volume which is by immersion in water.  If we have a container with a known volume of water in it, we can submerge an object in the water and then record the new level of the water.  Next, we subtract the original volume from the final volume and we are left with the volume of the object! 

Volume of an irregular object = final volume (water + object) - initial volume (water only)

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