Only 1 triangle.
If 2 sides are given, but the angle is Not between the sides then you can construct 2 triangles.
I believe the correct answer is B
The n two number are n and n+7. The two numbers are relatively prime because 7 is prime and doesn't divide 60. So we get n(n+7)=60. Guess and check tells us the two numbers are 5 and 12.
16.2 + 16.2 + 16.2 + 16.2
So your answer is 64.8
