Question 328687
If the total surface area is 180 cm^2, then divide by 6 because there are a total of 6 faces on a cube.  This gives you 30 cm^2  per face.  


Let x = length of each side of each face.  Then x^2 = 30, so x = {{{sqrt(30)}}}.  This is approximately 5.48 cm for each edge of the cube.


I have a page with several topics on Geometry and Geometric Measures on my website that may be helpful to you.  To see this website, click on my tutor name "rapaljer" anywhere in algebra.com.  Click on my website name that you will see there, and look near the bottom of my Homepage for "Topics from Geometry."  These are my own explanations that are written especially for students who have trouble with math!  



Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus