The length of a hall is 24m and the width is 16 m. The sum of the areas
of the floor and the flat roof is equal to the areas of four walls. Find the height of Hall and the volume of air contained in the hall
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Answer:
Given length of hall = 24 cm
width of hall = 18 m
height of hall = 4 m
area of four walls = 2[ lb+bh]
area of four walls = 2[l+b]h
area of floor and flat roof = 2lb
Given 2[l+b]h=2lb
2[24+18]h=2×24×18
21 42h=24×18
h=
7
72
height of wall is
7
72
m
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