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Answer:  They would both have the same volume!

The volume of an object does not change regardless of where it is, unless you somehow change the object!  An example of how you could change the volume of an object would be to blow up a balloon.

flat balloonfull balloon

The balloon will have the same mass whether inflated or deflated.  But when you inflate the balloon, you increase its volume

Note:  The mass of the balloon itself does not change. But the substance that fills the balloon would also have some mass.  If you filled the balloon with air, the mass of the air would be very small compared to the mass of the balloon.  But if you filled the balloon with water, the total mass of the balloon + water would be much larger than the mass of the balloon itself.

How is that?

Brain Twister
Why does a full balloon go "flat" after awhile?

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