Expression 9: ( "x" minus "a" ) squared times 0.9 9 5 plus ( "y" minus "b" ) squared times 0.9 9 5 equals "r" squared(x−a)2·0.995+(y−b)2·0.995=r2
9
18km
10
Expression 11: ( "x" minus "a" ) squared times 0.9 9 8 2 plus ( "y" minus "b" ) squared times 0.9 9 8 2 equals "r" squared(x−a)2·0.9982+(y−b)2·0.9982=r2
11
5,5km
12
Expression 13: ( "x" minus "a" ) squared times 0.9 9 9 2 4 plus ( "y" minus "b" ) squared times 0.9 9 9 2 4 equals "r" squared(x−a)2·0.99924+(y−b)2·0.99924=r2