Respuesta :

Hi1315

Answer:

36 units ⇒ Answer 1 is correct

Step-by-step explanation:

To find the perimeter of a triangle you have to simply add the 3 sides together.

They have given the lengths of three sides as follows.

9 , 12 , 15 units

Let us solve now.

Perimeter = 9 + 12 + 15

                 = 21 + 15

                 = 36 units

Hope this helps you :-)

Let me know if you have any other questions :-)

BasketballEinstein

Answer:

○ [tex]\displaystyle 36[/tex]

Explanation:

All you are doing is adding the edges up:

[tex]\displaystyle \boxed{36} = 15 + 12 + 9[/tex]

I am joyous to assist you at any time.

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