To find the perimeter of the triangle do I add all the sides together?

L1 = 12.5in, L2 = 10.6 in, and L3 = 9.5 in

Is the answer 32.6?

Correct.

Yay!!!! Thanks so much!!!!

Yay! And you're very welcome!

Yes, to find the perimeter of a triangle, you add all the lengths of the sides together.

In this case, you have three sides with lengths L1 = 12.5 inches, L2 = 10.6 inches, and L3 = 9.5 inches. To find the perimeter, you simply add these lengths together:

Perimeter = L1 + L2 + L3

Plugging in the given values, we have:

Perimeter = 12.5 inches + 10.6 inches + 9.5 inches

Adding these lengths together, we get:

Perimeter = 32.6 inches

Therefore, the correct answer is indeed 32.6.