In this problem, you will consider the balance of thermal energy radiated and absorbed by a person. Assume that the person is wearing only a skimpy bathing suit of negligible area. As a rough approximation, the area of a human body may be considered to be that of the sides of a cylinder of length L=2.0m and circumference C=0.8m. 

For the Stefan-Boltzmann constant use σ=5.67×10 ^-8  W/m ²  /K ⁴  .  

If the surface temperature of the skin is taken to be T _body  =30 ^∘  C, how much thermal power P _rb  does the body described in the introduction radiate? Take the emissivity to be e=0.6.  

 

Express the power radiated into the room by the body numerically, rounded to the nearest 10 W.