You are a member of the “Go Green” group at your school. You need to turn the garbage cans into recycling cans. You want to paint them all green so your classmates notice them. Find the surface area of the garbage can to find the amount of paint you will need. Use 3.14 to approximate pi.

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?