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## Homework Statement

An omidirectional source produces a free field sound pressure level of 77 dB at a radius of 1.6 m from the centre of the source. What free field sound pressure level in dB does it produce at a radius of 6 m from the centre of the sound source?

Answer: 65.5 dB

## Homework Equations

p1/p2 = r1/r2

## The Attempt at a Solution

p1/p2 = r2/r1

77/p2 = 6/1.6

3.75p2 = 77

p2 = 20.5 dB