Surface area using a net: rectangular prism (Full video)

Khan Academy

Supporting grades: 6

Description: A polyhedron is a three-dimensional shape that has flat surfaces and straight edges. Learn whether or not a certain net could be folded up into a certain rectangular prism. Created by Sal Khan. Teddy knows that a figure has a surface area of 40 square centimeters. The net below has 5 centimeter and 2 centimeter edges. So this is one of the 5 centimeter edges right over here.

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