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Answer on Mechanics | Relativity Question for moithilee bhattacherjee

Question #4095
For determining the area of a cube, why do we use cross product and not dot product?
Expert's answer
The area of a square, not a cube.
The magnitude of the cross product can be evaluated as the area of the parallelogram with side a. The area of the cube is the sum of 6 square areas, i.e 6 cross products
The volume of the cube is a ˙ |a × a|

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