Posted by **Troy** on Wednesday, September 29, 2010 at 5:24pm.

In equilateral triangle ABC, AB=3x and BC= 2x=12. Find the numerical value of the perimeter of ABC.

- math -
**Kate**, Wednesday, September 29, 2010 at 5:31pm
x=6

so i believe the answer would be

18+12+12 which equals 42

im not for sure though but thats how i think you would do it

- math -
**Henry**, Wednesday, September 29, 2010 at 5:40pm
If BC = 12, then each side = 12 and the

perimeter would be 3 * 12 = 36. please

check your problem.

- math -
**Reiny**, Wednesday, September 29, 2010 at 5:50pm
I think Troy has a typo

and it should say

BC = 2x+12

so 3x = 2x+12

x = 12

any other interpretation will lead to a contradiction, since the triangle is equilateral.

perimeter = 36

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