Question

What is the perimeter of a triangle with corners at `(3 ,8)`, `(1 ,1 )`, and `(4 ,3 )`?

Answer 1

The perimeter is `~~16`

Explanation:

Add the distances between the three points:

`P = sqrt((3 - 1)^2 + (8 - 1)^2) + sqrt((4 -1)^2 + (3-1)^2) + sqrt((3 - 4)^2 + (8 - 3)^2)`

`P = sqrt(53) + sqrt(13) + sqrt(26)`

`P = sqrt(53) + sqrt(13) + sqrt(26)`

`P ~~16`