An echo returned in 3s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 m/s?

An echo returned in 3s. What is the distance of the reflecting surface

1.	An echo returned in 3s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 m/s?
A.	520 m
B.	515 m
C.	530 m
D.	513 m
Answer» E.

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An echo returned in 3s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 m/s?

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