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Practice SAT Prep Math Question.

QUESTION:

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The diagonal of a cube is the maximum distance between two points on the cube's surface, and is equal to the distance between opposite corners of opposite faces. What is the diagonal of a cube with side length 9?


Show Hint
(A) 729√2
(B) 81√3
(C) 9√2
(D) 4√2
(E) 9√3

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