The CEO of a successful computer technology company is being interviewed on national news. He seems so confident and friendly. Smile and openly he makes jokes with the producer crew as they are preparing him to go on air. When the interview begins the CEO seems to take charge of the conversation stealing it in the direction he wants to go. Using a series of Hans Eysenck, what personality type does the CEO display.

I'm pretty sure there's a geometry rule for   anyways, if the triangle is equilateral, and the circle is circumscribed, the circle is outside of the triangle.  to find the area, you need the radius.  the radius should be a straight line from the center of the triangle to any of it's points.  draw lines from the center of the circle to each of the triangle points.  draw three more lines from the center to the middle of the sides of the triangle.  you should now have six separate 30-60-90 triangles inside of your original triangle. use your 30-60-90 rules to solve for the radius, then the circumference. 

Answer b is the answet