Answer
$343$ cubic meters
Work Step by Step
We are given that the formula $V=x^{3}$ can be used to find the volume $V$ of a cube with side length $x$.
To find the volume of a cube with side length 7 meters, we can plug in 7 directly into the formula and evaluate.
$V=(7)^{3}=7\times7\times7=343$ cubic meters