Question 926884
(-3,4), 
(1,5),  D = {{{sqrt(1 +16)}}}
(2,1),  D = {{{sqrt(16 + 1)}}}
(-2,0)  D = {{{sqrt(1 + 16)}}}
square: s = √17   
P = 4√17   
A = 17 units^2
{{{drawing(300,300,   -6, 6, -6, 6, grid(1), 
circle(2,1,0.3),
circle(-3, 4, 0.3),
circle(-2,0, 0.3),
circle(1,5, 0.3),
graph( 300, 300, -6, 6, -6, 6,0 ) )}}}