Sarnath: The first sermon of the Buddha, also known as the “Dhammacakkappavattana Sutta" was delivered at Sarnath, near Varanasi. This was a major event in the history of Buddhism, as it was a formal setting out of his teachings.
Bodh Gaya: Bodh Gaya is where Buddha attained enlightenment, but this was not the place where he delivered the first sermon.
Amravati: Amravati is a significant Buddhist site in Andhra Pradesh, but not related to Buddha's first sermon.
Sanchi: Sanchi is an important Buddhist site known for its stupas and other structures, but is not where Buddha delivered his first sermon.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?