Question

please help me with that

Answer 1

Common solution for each problem:
let
1st point=(x1,y1)
&,
2nd point=(x2,y2),then,

distance between 1st and 2nd point is:
√[(x2-x1)²+(y2-y1)²]

Just replace these x2,y2,x1,y1 with given points and you will get required answer..