Washing hands before handling food is essential to avoid transferring harmful germs, bacteria, or viruses onto the food. Clean hands prevent contamination, ensuring food safety.
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.