To find the volume of a rectangular prism, we use the formula
Volume = length × width × height.
Since the rectangular prism has a length of 4 m, a width of 2 m, and a height of 1 m we can plug this information into the formula.
(4 m) (2 m) (1 m)
4 m × 2 m = 8 m
8 m × 1 m = 8 m³
Therefore, the volume of the rectangular prism is 8 m³.