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The Areas of Three Adjacent Faces of a Cuboid Are X, Y and Z. If the Volume is V, Prove that `V^2` = `Xyz` - Mathematics

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Question

The areas of three adjacent faces of a cuboid are x, y and z. If the volume is V, prove that
`V^2` = `xyz`

Solution

Let a, b, d be the length, breath and height of cuboid then,

`x=ab`
`y=bd`
`z=da, and`
`v=abd`                          `[v=lxxbxxh]`

`⇒xyz=abxxbcxxca= (abc^2)`

`and v= abc`

`v^2=(abc)^2`

`v^2=xyz`

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Chapter 18: Surface Areas and Volume of a Cuboid and Cube - Exercise 18.2 [Page 31]

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RD Sharma Mathematics [English] Class 9
Chapter 18 Surface Areas and Volume of a Cuboid and Cube
Exercise 18.2 | Q 21 | Page 31

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