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You are standing at a distance 3.1 m away from a fire alarm bell when it starts ringing. In order to decrease the sound level

You are standing at a distance 3.1 m away from a fire alarm bell when it starts ringing. In order to decrease the sound level in your ear by 6dB, how far should you be away from the bell? Give your answer in m with one decimal place (unless it is an exact integer)

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