To find the volume of a cube, you can use the formula:
\[ \text{Volume} = \text{side length}^3 \]
Given the side length of the cube is \(2.4\) inches, we can calculate the volume as follows:
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Cube the side length: \[ 2.4^3 = 2.4 \times 2.4 \times 2.4 \]
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Calculate \(2.4 \times 2.4\): \[ 2.4 \times 2.4 = 5.76 \]
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Now multiply that result by \(2.4\): \[ 5.76 \times 2.4 = 13.824 \]
So, the volume of the cube is:
\[ \text{Volume} = 13.824 \text{ cubic inches} \]
Therefore, the final answer is:
\[ \boxed{13.824 \text{ in}^3} \]