Question

The cross sectional area of a square shaped tunnel is 25m², the volume of the tunnel is 575m³. How long is the tunnel?

Answer 1

23 m

Solution,

Let the length of tunnel be 'l'

Area=25 m^2

Volume of tunnel= cross sectional area* length

`or \: 575 = 25 * l \\ or \: l = (575)/(25) \\ l = 23 \: m`

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