The period of a pendulum is the time it takes the pendulum to complete one cycle through its motion. A pendulum that is L centimeters long will have a period of $\displaystyle{T}=\pi\sqrt{{\frac{{L}}{{245}}}}\usepackage{cmbright}\Huge\$ seconds. If a certain pendulum has a period of 1.5 seconds, what is the pendulum's length (in centimeters)?