Entrepreneurs play a significant role in society by:
1. Creating job opportunities and reducing unemployment.
2. Introducing innovative products and services that improve living standards.
3. Contributing to the economy through investments and taxes.
4. Supporting social causes and sustainable development.
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. 