Calculate the mass of air enclosed in a room of length, breadth and height equal to $5 m, 3 m$ and $4 m$ respectively.
Density of air $= 1.3 k g / m^{3}$ .

60 kg

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78 kg

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18 kg

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10 kg

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Solution

The correct option is B 78 kg
The density of a body is given by:
$d e n s i t y = \frac{m a s s}{v o l u m e}$

$1.3 = \frac{m a s s}{(5 \times 3 \times 4)}$

$m a s s = 1.3 \times 60 = 78 k g$

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Calculate the mass of air enclosed in a room of length, breadth and height equal to 5m,3m and 4m respectively. Density of air =1.3kg/m3.

The correct option is B 78 kgThe density of a body is given by:density=massvolume1.3=mass(5×3×4)mass=1.3×60=78kg

Calculate the mass of air enclosed in a room of length, breadth and height equal to $5 m, 3 m$ and $4 m$ respectively.
Density of air $= 1.3 k g / m^{3}$ .

The correct option is B 78 kg
The density of a body is given by:
$d e n s i t y = \frac{m a s s}{v o l u m e}$

$1.3 = \frac{m a s s}{(5 \times 3 \times 4)}$

$m a s s = 1.3 \times 60 = 78 k g$