People from urban areas, who are used to the hustle and bustle of cities, often find the tranquility of nature captivating. In the extract, Rajvir’s fascination with the lush greenery and tea plantations reflects how people, especially city dwellers, marvel at the natural beauty that is often absent in urban environments. The expansive green fields and tea bushes provide a refreshing contrast to the concrete jungles of cities.
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. 
प्रादेशिक स्तर पर आयोजित होने वाली 100 मीटर की बाधा दौड़ में आपके मित्र को प्रथम स्थान मिला है। उसे बधाई देते हुए लगभग 40 शब्दों में एक संदेश लिखिए।