Question

the volume, v, of a rectangular prism is determined using the formula v = lwh, where l is the length, w is the width, and h is the height of the prism. using this formula, what is the width of a rectangular prism that has a volume of 138.24 cubic inches, a height of 9.6 inches, and a length of 3.2 inches? round to the nearest tenth. 0.2 inches 4.5 inches 46.1 inches 414.7 inches

Explanation:

Step1: Rearrange volume formula for width

Given $V = lwh$, we can solve for $w$ by dividing both sides by $lh$. So $w=\frac{V}{lh}$.

Step2: Substitute given values

We have $V = 138.24$, $l = 3.2$, and $h = 9.6$. Substitute into the formula: $w=\frac{138.24}{3.2\times9.6}$.
First, calculate $3.2\times9.6 = 30.72$.
Then, $w=\frac{138.24}{30.72}=4.5$.

Answer:

B. 4.5 inches