Answer:
C
Step-by-step explanation:
Answer:

Step-by-step explanation:
Hi!
Since an equilateral triangle means that every side is equal, our triangle will have 12 on all sides.
To find the height of an equilateral triangle we use
.
.
So the height is
.
Now we have to solve 12 *
÷ 2.

.
Thus, the area of the triangle is
.
Hope this helps!
Answer:
x - 15
Step-by-step explanation:
Your answer should be C.
Let me know if you have any questions :)