0.000679 is the correct answer
move the decimal point to the left twice because of the -4 on the 10
The answer is 62.84 kg.
To calculate the mass of air (m) we need to use the volume (V) of the air (which is the same as the volume of the room) and the density (D) of the air.
D = m/V
The density of air is: D = 1.225 kg/m³
The volume of air is: V = 5.4m×3.8m×2.5m = 51.3 m³
D = m/V
m = D * V
m = 1.225 kg/m³ * 51.3 m³
m = 62.84 kg
Answer:
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This is the longer leg of this triangle
It'd be AEC, the vertex are just the lines that create the point E
