Question 1031516
We use the distance formula and get
{{{d = sqrt((x[2]-x[1])^2 + (y[2]-y[1])^2)}}}
{{{d = sqrt((-1-2)^2 + (4-3)^2)}}}
{{{d = sqrt(9 + 1) = sqrt(10)}}}
Since a regular pentagon has five equal sides, the perimeter is 5 times that...
Choice 2 is correct.