Question

The human body generates about 400 BTUs of body heat per hour while active. If an office that is 20 ft × 30 ft × 10 ft has 8 workers, how many BTUs per cubic foot do they produce in 3 hours? (to the nearest tenth)


A)

0.1 BTUs/ft3
B) 0.2 BTUs/ft3
C) 0.5 BTUs/ft3
D) 1.6 BTUs/ft 3

Answer 1

1.6

Explanation:

Answer 2

1.6 BTUs per cubic foot

Explanation:

We are given the dimensions of an office 20 ft × 30 ft × 10 ft

Volume of office =
`20 ft* 30 ft*10 ft`

=
`6000 ft^3`

Human body generates BTUs of body heat per hour = 400

So, BTUs produced in 3 hours =
`400 * 3`

=
`1200`

1 human body produce BTUs in 3 hours = 1200

8 human body produce BTUs in 3 hours =
`1200 * 8`

=
`9600`

So, they produce BTUs per cubic foot =
`(9600)/(6000)`

=
`1.6`

Hence they produce 1.6 BTUs per cubic foot in 3 hours.