Finding the volume of a larger object is easy. You would use the same water displacement method, except using the equipment is a slightly different way.
1) Let's say you have found a rock.
2) Instead of put the rock into a graduated cylinder, you will use a beaker fill to the top with water.
3) You have to be very careful and put the rock in slowly.
4) Since the water will overflow make sure you place a dish under the beaker to catch the water.
5) After you have put the rock into the water and it stops overflowing, carefully pour the water from the dish into a graduated cylinder to measure the water.
6) Check the level of the water and you will have the rocks volume.
Don't forget to convert your measurement!
1 mL = 1 cm3
The volume of the rock is 40 cm3
to record all measurements using the metric system.