What is the circumference of the circle shown below? Use 3.14 for Pi.
A) 18.84 in.
B) 12 in.
C) 9.42 in.
D) 3 in.

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?