Answer:
7 cm
Step-by-step explanation:
Given : A cube with side length m has a volume of 343 cubic centimeters.
To Find: What is the side length of the cube in centimeters?
Solution:
Volume of cube = 
The side of the cube is m
So, Volume of cube of m = 
Since the volume of cube is 343 cubic centimeters
So,
![m=\sqrt[3]{343}](https://tex.z-dn.net/?f=m%3D%5Csqrt%5B3%5D%7B343%7D)

Hence the length of the cube is 7 cm.