Air contains 21 percent of oxygen by volume. Find the volume of oxygen in a room of dimensions 4 m by 5 m by 3 m .
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Step-by-step explanation:
length of room = l = 5 m
breadth of room = b = 4 m
height of room = h = 3 m
volume of room = l × b × h
= 5 × 4 × 3
= 60 cu m
% of oxygen = 21%
= 60 × 21/100
= 6 × 21/10
= 6 × 2.1
= 12.6 cu m
hope you get your answer
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