Water Volume Required in a Cylindrical Tank

A cylindrical tank is partially filled with water. The tank has a radius of 3 meters and a height of 5 meters. The water reaches a height of 2 meters in the tank. If the tank is to be filled to its maximum capacity, how much more water, in cubic meters, is needed to fill the tank completely?

To find the volume of a cylinder, use the formula: $$V = \pi r^2 h$$ where $V$ is the volume, $r$ is the radius, and $h$ is the height.