Question 1064434: Find the length of a diagonal of a cube with a side of 4 inches. Leave your answer in simplest radical form. Answer by Boreal(15235) (Show Source):
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The diagonal of the side is 4 sqrt (2)
The diagonal of the cube is the hypotenuse of a triangle with sides 4 sqrt(2) and 4.
Squaring both and adding, one gets 32+16=48
taking the square root of 48 is 4 sqrt (3).
