SOLUTION: A room is 15 feet by 12 feet by 9 feet high , it contains an air conditioner that circulates air at rate of (11) cubic meters per hour .
how long does it takes to exchange the a
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Question 717777: A room is 15 feet by 12 feet by 9 feet high , it contains an air conditioner that circulates air at rate of (11) cubic meters per hour .
how long does it takes to exchange the air in the room 10 times ,giving your answer to the nearest minute?
thank you i need urgent help please?
Found 2 solutions by Alan3354, fireychariot:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A room is 15 feet by 12 feet by 9 feet high , it contains an air conditioner that circulates air at rate of (11) cubic meters per hour .
how long does it takes to exchange the air in the room 10 times ,giving your answer to the nearest minute?
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The room's volume = 15*12*9 = 1260 cubic feet.
10 times that = 12600 cu ft
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1 cu meter =~ 35.315 cu ft
11 cm meters/hr = 388.46 cu ft/hr = 6.4744 cu ft/min
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12600/6.4744 = 1946 minutes
Answer by fireychariot(1) (Show Source): You can put this solution on YOUR website!
Alan's method is right however just to point out 15*12*9 is not 1260 but 1620.
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