If the volume of a cube is $512$ cu. metres. What is the length of one side of the cube?

6.8 m

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7.8 m

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8 m

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9 m

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Solution

The correct option is A $8 m$
Volume of a cube is given by $V = a^{3}$ , where $a$ is the edge of the cube.
Given, volume of the cube $= 512$ cu. m.
Then,
Volume of a cube $512 = a^{3}$
$⟹$ $8^{3} = a^{3}$
$⟹$ $8 = a$ .
Therefore, the length of one side of the cube/edge is $a = 8$ m.
Hence, option $C$ is correct.

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If the volume of the cube is 512, the length of the sides of the cube is:

512

512 c m^{3}

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