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A hall has the dimensions 10 m xx 12 m x...

A hall has the dimensions `10 m xx 12 m xx 14 m`. A fly starting at one corner ends up at a diagonally opposite corner. What is the magnitude of its displacement

A

`17m`

B

`26m`

C

`36,`

D

`20m`

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The correct Answer is:
D
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