How to Show That The Surface Area of a Cuboid is: S(l, w, h)=2(l(w+h)+wh) [GCSE, Geometric Proof]
In this video - I show you how to demonstrate, from first principles, why the surface area of a cuboid is dependent on its length, width and height. In the process we discover the formula S(l, w, h)=2(l(w+h)+wh) which can be used to calculate the surface area of any cuboid. I hope you enjoy this video, and if you have any questions, leave them in comments section. Thanks for watching!
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