3 to the power of 5 to the power of 2-3 to the power of 0 is 9 because 3 to the power of 0 is one and 2 minus one is one and 2 to the power of one is two and 3 to the power of 2 is 9
2pi r^2 is the area formula. Take (2pi r^2) times the height to find the volume. In this case it would be (2pi 2.5^2) times (11)= volume. Hope this helps!