put some water in a measuring cylinder, take the reading and then place the pebble in the water and take over the reading.Then you minus the two values to get the volume of the pebble\rock
For a stone or a pebble the best method is to use a graduated cylinder and the displacement method. Fill the jar with water to a level so that the pebble can be completely submerged. Read of the volume. Then insert the stone or pebble into the cylinder and read off the new volume. The difference between the two will be the required volume. However, for a rock the equipment needs to be scaled up and graduated cylinders don't usually come that big. So you will need a bucket or something in which the rock can fit and a tray or large enough container to catch the spill from the bucket (see next paragraph). Put the bucket in the tray. Fill the bucket with water - full to the top. Then very gently lower the stone into the bucket, catching all the spilling water in the tray. Measure the water in the tray using whatever measuring equipment you can get hold of. That is the volume of the rock.
The formula of volume
You can't. The whole point of finding volume is to convert mL to cm3. To do this, use use the rule: 1mL = 1cm3
You could use cubic yards or cubic meters.
You have to know two out of three ... mass, volume, density ... then you can find the missing one. If density is missing . . . Density = (mass)/(volume) If mass is missing . . . Mass = (density) x (volume) If volume is missing . . . Volume = (mass)/(density)
circle does not have volume
eat a burger
Use volume displacement method.
water displacement
Use a graduated cylinder and the water displacement method. Pour the sample of water in the graduated cylinder and find its meniscus. That is its volume.
For a stone or a pebble the best method is to use a graduated cylinder and the displacement method. Fill the jar with water to a level so that the pebble can be completely submerged. Read of the volume. Then insert the stone or pebble into the cylinder and read off the new volume. The difference between the two will be the required volume. However, for a rock the equipment needs to be scaled up and graduated cylinders don't usually come that big. So you will need a bucket or something in which the rock can fit and a tray or large enough container to catch the spill from the bucket (see next paragraph). Put the bucket in the tray. Fill the bucket with water - full to the top. Then very gently lower the stone into the bucket, catching all the spilling water in the tray. Measure the water in the tray using whatever measuring equipment you can get hold of. That is the volume of the rock.
Multiple the length by the width by the height
First 'weigh" the ojbect on a scale. this gives the mass. 2nd use the water displacement method to find the volume. Then divide Density = mass / volume.
You will need the mass and volume of the block. To find mass, use an electronic balance. To find volume, use length x breadth x height. For irregular solid, use the water displacement method. The density is mass divided by volume.
How do I register to use pebble?
Get a sample of the metal. Use a scale to find its mass. If it is shape is that of a rectangular solid (box) measure length, width, and height and multiply to find volume. If it is irregularly shaped, use the water displacement method to find its volume. Divide the mass by the volume to get the density.
Use the water displacement method