Question

Is the perimeter 70?

Answer 1

Explanation:

AC = 8 + 15 = 23

C to the tangent point of BC = 15 (tangents are equal when they come from the same point.

B to the tangent point of BC = 12 (same reason).

BC = 15 + 12 = 27

By a similar argument BA = 12 + 8 = 20

So add them together. 20 + 27 + 23 = 70 I think.

You are absolutely right. Or we both are wrong.