Answer:

Step-by-step explanation:


Answer:
An echo is formed as a result of reflection of the original sound which returns to the listener. You might have experienced Echo in an EMPTY ROOM but no echo is produced after the room is occupied. To avoid echo from being produced the echo has to be absorbed. Echo in a cinema theatre is absorbed by the WALLS of the theatre.
They are not plain. The walls are corrugated or shaped to form tiny holes or empty spaces to ABSORB the ECHO. Modern Theatre's have ABSORBENT materials sticked to the walls of the theatre.
So if two is fifty, divide it by two to get twenty five, multiply that by three to get seventy five. 3x=75
Answer:
most definitely
Step-by-step explanation:
Answer:
d) none of the above
Step-by-step explanation:
correct me if wrong .