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

## Answer this Question

## Related Questions

- Geometry - In equilateral triangle ABC, AB=3x and BC=2x+12. Find the numerical ...
- Geometry - Let ABC be any triangle. Equilateral triangles BCX, ACY, and BAZ are...
- Centroids and Triangles - determining perimeter? - Let G denote the centroid of ...
- Math - An equilateral triangle ABC has AB=20√3. P is a point placed in ...
- Math - An equilateral triangle ABC has AB=20√3. P is a point placed in ...
- Hard Geometry Problem - Hi guys. I need a lot of help on this. "Equilateral ...
- geometry - Open that link please please help me with my assignments 1. in the ...
- geometry - in the diagram below of triangle abc, de is a midsegment of triangle...
- math - Write a sequence of transformations that maps triangle ABC onto triangle ...
- maths - ABC is an acute triangle with ∠BCA=35∘. Denote the ...