"Volume" in science can mean different things depending on the context. To understand how to get the volume, we need to know what you're referring to.

Here are some possibilities:

1. Volume of a solid object:

* Regular shapes: You can use specific formulas based on the shape:

* Cube: volume = side x side x side

* Rectangular prism: volume = length x width x height

* Sphere: volume = (4/3)πr³ (where r is the radius)

* Cylinder: volume = πr²h (where r is the radius and h is the height)

* Cone: volume = (1/3)πr²h (where r is the radius and h is the height)

* Irregular shapes: Use displacement method (submerge the object in a graduated cylinder filled with water and measure the volume of the water displaced).

2. Volume of a liquid or gas:

* Graduated cylinder: Read the volume directly from the markings on the cylinder.

* Beaker: Read the volume from the markings, but note that beakers are less precise than graduated cylinders.

* Measuring cup: Read the volume from the markings.

* Syringe: Read the volume from the markings on the syringe.

3. Volume in scientific calculations:

* Volume of a gas: Use the ideal gas law (PV = nRT) to calculate volume based on pressure, temperature, and the number of moles.

* Volume of a solution: Use the formula: volume = mass / density.

Please provide me with more context about what you're looking for to get the volume, and I'll be able to give you a more specific answer.