# Finding Volume

## Overview

There are two different formulas for finding the volume of a rectangular prism.

If we know the height and the area of the base of the rectangular prism, we can use

**Formula 1**.

If we know the length, width, and height of the rectangular prism, then we can use

**Formula 2**.

We can use these formulas to determine the volume of rectangular prisms with

fractional sides.

For example…

**Step 1:** Choose a formula

We don’t know the area of the base, but we do know the length, width, and height

of the rectangular prism. That means we need to use Formula 2.

**volume = (length)(width)(height)**

**Step 2:** Plug & solve

Plug the length, width, and height into the formula and solve

**Step 3:** Simplify

If necessary, simplify the solution.

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Use the figure below to answer the question.

What is the volume of **figure **?

Use the figure below to answer the question.

What is the volume of** figure **?

Use the figure below to answer the question.

What is the volume of **figure**?

Use the figures below to answer the question.

Which figure has the **largest** volume?

Figure 3

Use the figures below to answer the question.

Which figure has the **smallest** volume?

Figure 1

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