How can you find your volume?
An easy and low tech way to find the volume of an object is to
measure the volume of water it displaces. Fill a container that has
lines for measuring volume on it with enough water to fully
submerge the object whose volume you will measure, but don't fill
it all the way to the top. Write down the amount of water you start
with, let's say 1 liter. Now put the object you want to measure
into the water carefully so that you don't splash any water out and
make sure that it is fully submerged. Now write down the new volume
of water in the container, let's say it now reads 2.5 liters.
Subtract the original volume from the new volume to find the volume
of your object: 2.5L - 1L = 1.5 liters.
Another way to find the volume of an object fill a container
with water to the very top of the container. Place that container
of water into an empty larger container. Put the object that you
want to measure into the container of water slowly so that you
don't spill any more water than the object pushes out on its own.
When the object is fully submerged, it should have pushed out some
water into the larger container. To ensure accuracy, the level of
water in the water filled container that now also contains the
object to be measured should still be at the very top of the
container. Carefully remove the water/object filled container from
the larger container so as to not spill any more water. Carefully
pour the overflowed water into a smaller measuring vessel to find
the volume of your object.