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If the value of a cuboid is 3x^2-27 , t...

If the value of a cuboid is `3x^2-27` , then its possible dimensions are (a)`3,\ x^2,\ -27 x` (b) `3,\ x-3,\ x+3` (c)`3,\ x^2,\ 27 x` (d) `3,\ 3,\ 3`

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`3x^2 - 27 `
`= 3(x^2 - 9)`
`= 3(x + 3)(x - 3)`
Identity used: `a^2 - b^2 = (a + b)(a - b)`
Dimensions `= 3, x + 3, x - 3`
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