Ok I have the following question: If the top of your head has a surface area of 113 cm2, what is the weight of the air above your head? I'm not sure what I am doing wrong. I used the P = F/A. Solved for F to get F= P/A. I'm assuming the question is asking me for the force of the air on my head. I'm using a figure of 1.013X10^5 Pa for atmospheric pressure, and I coverted cm to meters then divide the P(101300 Pa) by A(1.13) meters, and webassign told me to go fish. I'm sure I'm doing something wrong, just not sure what.