The second option is correct, I,e what you've chosen
1)inside the triangule is 180º .There are 3 angules, one with 120º, theta and
angle ACB, lets call it x.
x + theta + 120 = 180
x + theta= 180-120
x + theta= 60
x= 60- theta
angle ACB= 60- theta
The greatest factor is 52 that is a prime number is 13.
I cant understand please turn to enlish
The answer would be 157.07, with a radius of 25