**Volume** is the amount of space a 3D shape takes up. Volume is sometimes called capacity. In math, volume is the measurement of space inside an 3 dimensional (dimension refers to length, width, depth, or height) and is helpful for measuring air and liquid.

You can work out the **volume** of a shape by multiplying height × width × depth. If the shape is made of cubic cm blocks, you can count the cubes to find the shape’s **volume**.

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## Volume of a Rectangular Prism (and Cube)

To find the **volume of a rectangular prism**, multiply its 3 dimensions: length x width x height. The **volume** is expressed in cubic units.

## Volume of a Triangular Prism

The **formula** for the **volume of a prism** is V=Bh , where B is the area of the base of the prism and h is the height of the prism. The base of the **prism** is a triangle.

**We find** the **volume** of a **triangular** prism by multiplying the area of the base (the **triangle** part) by the height of the prism.

Another way to look at the volume formula of a triangular prism.

## Volume of a Cylinder

For any **cylinder** with base radius ‘r’, and height ‘h’, the **volume** will be area of the base (the circle part) times the height of cylinder. Therefore, the **volume of a cylinder** V= Bh (πr^{2}h) cubic units.

## Volume of a Cone

The formula for the **volume** of a **cone** is V=1/3hπr².

## Volume of a Sphere

The **formula for the volume of a sphere** is V = 4/3 πr³.