Please help! Past due!

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.