K=W/M You are correct here
K*M=W*M/M multiplied both sides by M
K*M=W simplified M/M
M*K/K=W/K divide both sides by K
M=W/K simplify K/K
Those two statements contradict each other.
They don't you just have to have a little better understanding of maintenance on planes. Baring self healing paint there is no way to protect paint from rain hitting a plane at 400mph. The reason the B2 is kept out of the rain is to keep costs down, every plane has rain erosion issues but the cost to repair the paint on the B2 is much higher then for an F15.
No, the power is spread across radio and tv transmitters, cell towers, and the like. The radar sites can be largely passive as long as they are synchronized.
I don't know where you are getting your information but it is wrong, multiple transmitters cause a huge problem as the signals can only be synchronized in a line every where else the two signals will be out of phase. This will essentially cause one transmitter to jam the other.
Evolution is a million line computer program falling into place by accident.