If you are standing 15 ft from a tree and you can see the top of a tree from a 70° angle from the horizon, describe how you can find the
height of the tree.

Which formula gives the area of a triangle? a=1/2(b+h)

Volume of a cylinder with a radius of 13 in and height of 30 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?