Not sure what you're asking for but the Integer of 160ft above sea level will just be +160
its 1200 i think i work it out but i could have done it wrong
What do you mean?.. Do you mean: e.g. How many tens are in 12.476? So you basically have the 70 as ten right? Well you need to count from the first number (12). So the answer to that example would be 1247. Forget about the decimal point.
(x - 2)^2 + (y - 6)^2 = 2
This is found by plugging in the points and knowing that the radius is 2.
(2,2) is not on the circle because it is 4 away from the center, which is twice the radius.