Question 473071
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Hi,
Note: D = {{{sqrt ((x[1]-x[2])^2+(y[1]-y[2])^2))}}}
1) (-4,-20), 
   (-10,15)    D ={{{sqrt( (6)^2 + (-35)^2) = sqrt(1261)}}}

2) (40,32), 
   (36,20)       D ={{{sqrt( (4)^2 + (12)^2) = sqrt(160)}}}