A hall has the dimensions $10 m \times 12 m \times 14 m$ . A fly starting at one corner ends up at a diametrically opposite corner. What is the magnitude of its displacement nt-->

17 m

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26 m

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36 m

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20 m

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Solution

The correct option is D 20 m

Diagonal of the hall $= \sqrt{l^{2} + b^{2} + h^{2}}$
$= \sqrt{10^{2} + 12^{2} + 14^{2}}$
$= \sqrt{100 + 144 + 196}$
$= \sqrt{400} = 20 m$ .

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A hall has the dimensions 10m×12m×14m. A fly starting at one corner ends up at a diametrically opposite corner. What is the magnitude of its displacement nt-->

The correct option is D 20 m Diagonal of the hall =√l2+b2+h2 =√102+122+142 =√100+144+196 =√400=20 m.

A hall has the dimensions $10 m \times 12 m \times 14 m$ . A fly starting at one corner ends up at a diametrically opposite corner. What is the magnitude of its displacement nt-->

The correct option is D 20 m

Diagonal of the hall $= \sqrt{l^{2} + b^{2} + h^{2}}$
$= \sqrt{10^{2} + 12^{2} + 14^{2}}$
$= \sqrt{100 + 144 + 196}$
$= \sqrt{400} = 20 m$ .