We are given the angle WON. The letters W, O and N represents points included in the angle. One of these points is the vertex of the angle. It is the point which an angle is measured. For this case, the vertex is point O. Therefore, the correct answer is option B.
The area is 270 inches, because you would do length times width, which in this situation is 28 and 15. You multiply them, and you get 270.
It will take 250 seconds for it to reach the bottom. To find this I did 17.5 divided by .07.