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Question 56
The length, breadth and height of a school auditorium are 10 m, 30 m and 10 m respectively. The density of air is 1.3 kg per cubic metre, the mass of their inside the auditorium is
Solution
Given, density of air=1.3 kg/m$$^{2}$$
volume of the auditorium=l x b x h=3000m$$^{2}$$
mass inside auditorium=density x volume=1.3 x 3000=3900 kg
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