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All 3 dimensions of a cube are the same. [ 15 x 6 x 45 ] is not a cube.

If it's actually a solid shape with all right angles, then its surface area is

2 x (15 x 6) + 2 x (15 x 45) + 2 x (6 x 45) =

2 x (90) + 2 x (675) + 2 x (270) = 80 + 1350 + 540

= 2,070

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15y ago

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