# 5.1 Finding Volume

## Unit Goals

• Students find the volume of right rectangular prisms and solid figures composed of two right rectangular prisms.

### Section A Goals

• Describe volume as the space taken up by a solid object.
• Measure the volume of a rectangular prism by finding the number of unit cubes needed to fill it.
• Use the layered structure in a rectangular prism to find volume.

### Section B Goals

• Describe the calculations from the previous section as $\text{length} \times \text{width} \times \text{height}$ or $\text{area of the base} \times \text{height}$.
• Find volume using $\text{length} \times \text{width} \times \text{height}$ or $\text{area of the base} \times \text{height}$.

### Section C Goals

• Find the volume of a figure composed of rectangular prisms.

### Glossary Entries

• area

The number of square units that cover a flat figure without gaps or overlaps.

• cubic unit
A unit cube with side lengths that are standard measurement units that is used to measure volume.

• rectangular prism
A solid figure which has six faces that are rectangles.

• unit cube
A cube whose sides are 1 unit long, used to measure volume.

• volume
The number of unit cubes that fill a solid figure without gaps or overlap.