Question

what is the perimeter of the triangle with vertices L=(1,5) , M=(-3,-3) ,and N=(3,1) ?

Answer 1

Do you know the point
distance formula?

Answer 2

yup

Answer 3

So, calculate the distance from L to M.

Answer 4

16sqrt 5

Answer 5

Not exactly, you are a little off

Answer 6

its 4sqrt5

Answer 7

yes opps

Answer 8

M to N it's sqrt 97

Answer 9

Okay, So I did the calculations and I got 4sqrt5, 2sqrt13, 2sqrt5. Now add all of these together.

Answer 10

Can you add those values together?

Answer 11

BTW are you looking for an exact value or approx?

Answer 12

2sqrt 13 +6 sqrt5

Answer 13

Root 80 + Root 52 + Root 20. Another way of completing this question is to use Pythagoras theorem, and its arguably quicker. Just take the difference in x values between two points, and the difference in y values then apply: Length^2=x-change^2+y-change^2 For each of the length's then add together. I agree entirely with @Zordoloom method, but i am providing an alternate.

Answer 14

its 2sqrt3, +6sqrt5

Answer 15

Does that answer your question?

Answer 16

no it's the answer

Answer 17

i didnt understand the alternate method @Henry.Lister

Answer 18

So do I get a medal?

Answer 19

I know its not precise, but this is our triangle right?

Answer 20

We can split it up into 3 seperate triangles.

Answer 21

how?

Answer 22

i got it