Ka8:
In real terms, the size of the Earth is so great that when flying at 36000ft you will only cover approximately 37nm further in a full equator orbit than if you were at MSL.
Hmmm... I get approximately 31.4159256 NM further at 36,000'... OTOH, that is about 36.1 statute miles...
BTW... Just for exercise some time, try to figure out in your head (no pencil, paper, or notes allowed) the mass of the earth, using commonly-known values and gross approximations.
It took me 2 dark nights' worth of walking home from the bus stop, about a half hour each time. The figure I came up with was right in between 2 [significantly different] values I could find in a web search...
FWIW, I never flew a Ka8, but the Ka6 I flew back in '77 or so was a SWEET machine!