Question

How can the volume of an irregular unknown object be measured?

using a ruler to measure length,

width, and depth measuring the volume of water displaced by the object

obtaining the mass of the object

measure the radius and use V= hr2

Answer 1

We can find the volume of the irregular shaped object by using a measuring cylinder or the displacement can (Eureka can)

Using a measuring cylinder
1. Observe and note down the amount of water in the measuring cylinder.
2. Tie the object with a piece of string and lower it slowly until it is completely submerged. Note the new water level.
3. Subtract the new water level with the original water level. we will get the volume.

Using a displacement can
1. Fill a displacement can with water to the level of the spout. Allow the excess water to flow into a container.When the water stop flowing, replace the container with a dry, empty measuring cylinder.
2. Tie a piece of string to the object and lower it into the displacement can till it is completely submerged. Some of the water id displaced into the measuring cylinder. Note the volume of water displaced by the object.
Hence, Volume of water = volume of water displaced by the object.