To calculate the volume of a rectangular prism, you need three measurements: length, width, and height. From the information you provided, it seems that the dimensions are 3m, 5m, and 7m respectively.
The formula to calculate the volume of a rectangular prism is:
Volume = length × width × height
Substituting the given measurements into the formula:
Volume = 3m × 5m × 7m
= 105 cubic meters
Therefore, the volume of the rectangular prism is 105 cubic meters.