The depth to this underwater mountain is 8410 m.
An echo is the sound heard after the reflection of the initial sound from a reflecting surface.
The echo time or the time taken for an echo to be heard is used to calculate the distance from the reflecting surface.
The Distance is of a place from the time taken to hear an echo is calculated as follows:
Distance = Speed * Time/2
Distance = 1450 * 11.6/2
Distance = 8410 m
Therefore, the depth to this underwater mountain is 8410 m.
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