PLSSS HELP PLS ITS EASY SO YEAAA

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.