There are 4 walls in a cuboid.
This question explains how to find area of 4 walls https://www.teachoo.com/1310/467/Ex-13.1--3---The-floor-of-a-rectangular-hall-has-perimeter/category/Ex-13.1/
Teachoo is free. Login to view more pages.
Login with facebook
Login with gmail
On signing up you are confirming that you have read and agree to
Terms of Service