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21. Mensuration-II (Volumes and Surface Areas of a Cuboid and a Cube)
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Q17 of 77 Page 21

The dimensions of a cinema hall are 100 m, 50 m and 18 m. How many persons can sit in the gall, if each person required 150 m3 of air?

Given,


Dimensions of cinema hall are = 100m ×50m × 18m


Where , length = 100m , breadth = 50m , height = 18 m


Each person air requirement = 150 m3


Now,


Volume of cinema hall =


So,


Number of person can sit in cinema hall =


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15

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A metal cube of edge 12 cm is melted and formed into three smaller cubes. If the edges of the two smaller cubes are 6 cm and 8 cm, find the edge of the third smaller cube.

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Questions · 77
21. Mensuration-II (Volumes and Surface Areas of a Cuboid and a Cube)
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