Public communication refers to the process of conveying information to a large audience, typically through mass media, social media, or public speaking platforms. It involves the dissemination of information in a manner that engages a wide group of people. An example of public communication is a speech delivered by a government official or leader to inform citizens about a new policy or initiative.
In the adjoining figure, $\triangle CAB$ is a right triangle, right angled at A and $AD \perp BC$. Prove that $\triangle ADB \sim \triangle CDA$. Further, if $BC = 10$ cm and $CD = 2$ cm, find the length of AD.