What is the length of a box if its volume= $70 m^{3}$ , breadth = $7 m$ and height = $2 m$ ?

7 m

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5 m

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9 m

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10m

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Solution

The correct option is B
5 m

Volume $V = l e n g t h \times b r e a d t h \times h e i g h t$

$\Rightarrow 70 = l e n g t h \times 7 \times 2$

$\Rightarrow 70 = l e n g t h \times 14$

$\Rightarrow l e n g t h = \frac{70}{14} = 5 m$

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