



 
Johnnier, The volume of a rectangular box is length × width × thickness cubic units. If the box is a cube then length = width = thickness so the volume is length^{3} cubic units. Thus in your problem length^{3} = 125 cubic millimeters. What is the length? Each of the faces of the box is a square with length = width. What is its area? how many faces are there? What is the total surface area? Penny  


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