The answer is neither 108 or 900, but it is
V = 1357.17To solve, use the formula for the volume of a cone:

fill r with 6 and h with 36

When you solve that, you get 1357.17
Step-by-step explanation: [(60 – 15) • 60] + 25} = 45.60 +25
=2725
45 + 22 ÷ 11. 2725
45 + 2 . 2725
45+ 5450
=5495