# 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.