The diagonal of the cube is √27. Find its volume.

The square of the diagonal of a parallelepiped is equal to the sum of the squares of its three dimensions, and since this parallelogram is a cube, then d ^ 2 = 3 * a ^ 2.

a ^ 2 = d ^ 2/3 = 27/3 = 9.

a = √9 = 3 cm.

Let’s define the volume of the cube.

V = a ^ 3 = 3 ^ 3 = 27 cm3.

Answer: The volume of the cube is 27 cm3.



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