Question

What is the perimeter of a triangle with corners at `(3 ,7 )`, `(2 ,3 )`, and `(4 ,9 )`?

Answer 1

Perimeter = 12.6837

Explanation:

Length `c=sqrt((3-2)^2+(7-3)^2)=sqrt17`

Length `a = sqrt((4-2)^2+(9-3)^2) = sqrt40`

Length `b = sqrt((4-3)^2+(9-7)^2) = sqrt5`

Perimeter P `= sqrt17 + sqrt40 + sqrt5`
`= 12.6837`