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Dvinal [7]
3 years ago
10

A human body that is performing light work generates about 650 BTUs of body heat per hour. If a room that is 10 ft × 12 ft × 9 f

t is being painted by 3 people, how many BTUs per cubic foot do they produce in 2 hours? (to the nearest tenth)
Mathematics
2 answers:
Helen [10]3 years ago
7 0
Your answer should be, BTU / cubic foot = 650 (4) (4) / 5000 = 2.08 BTU / ft^3, Hope this helps you! :D
Crazy boy [7]3 years ago
7 0

Answer:

1.5BTU/ft³( to nearest tenth)

Step-by-step explanation:

A human body generates 650BTus of heat per hour.

To get the amount of heat generated by a room with the dimension 10 ft × 12 ft × 9 ft

First we will find the volume of the room in cubic ft

Volume = length ×breadth × width

Volume = 10×12×9

Volume = 840ft³

This means 840ft³ produces 650Btu of heat by one body.

For 1ft³, amount of BTUs generated by the three person in an hour will be (640/840)BTU i.e 0.762BTU

Amount of heat in BTU/cubic feet generated in 2 hours will be

2 × 0.762BTU/ft³

= 1.524BTU/ft³

= 1.5BTU/ft³( to nearest tenth)

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