Which value of x satisfies the equation below

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Atemperature of 1.64◦f corresponds to answer in units of ◦c.