Question

c. Sunil is standing between two
parallel walls. The wall closest to
him is at a distance of 660 m. If he
shouts, he hears the first echo after
4 s and another after another 2
seconds.
1. What is the velocity of sound in
air?
2. What is the distance between the
two walls?​

Answer 1

Answer:

The distance between 2 the walls is =1650m.