The volume of a cone is 1/3(pi)r^2h. So, you would do 2.25 * pi, because 2.25 is the radius squared. 2.25pi. Then, you would multiply by the height, which is 23. 2.25 * 23 is 51.75. Divide the number by 3. When you do, you should get 17.25. The answer in terms of pi is 17.25.
