To calculate the volume of this rectangular prism we use the formula:
[tex]V=l\times w\times h[/tex]
Where V is volume, l is length, w is width and h is height.
Step 1. Identify the length, width, and height.
The values are shown in the following image:
[tex]\begin{gathered} l=4 \\ w=1\frac{1}{2} \\ h=2\frac{1}{2} \end{gathered}[/tex]
Step 2. Convert the mixed numbers to a decimal:
[tex]\begin{gathered} w=1\frac{1}{2} \\ w=1.5 \end{gathered}[/tex]
And
[tex]\begin{gathered} h=2\frac{1}{2} \\ h=2.5 \end{gathered}[/tex]
Step 3. Substitute the values of l, w, and h into the volume formula:
[tex]V=4\times1.5\times2.5[/tex]
Solving the operations we find the answer in cubic units:
[tex]V=15[/tex]
Answer: B. 15 cubic units
