Question

walls and ceilings of a cinema hall are covered with sound absorbing materials why​

Answer 1

HELLO

because in cinema hall echo is produced and sound of the movie will not be clear. So, to avoid the echo and to absorb the sound once produced without reflection, cinema hall is produced with sound absorbing materials.

HOPE IT'S HELPS YOU ✌✌◾⭐

Answer 2

Answer:

Because they sound can't go out all sound is absorbed by clothes