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## Homework Statement

The sound intensity level 15.0 m from a point source is 64.0 dB. At what distance will it be 53.0 dB?

## Homework Equations

Beta = 10log(I/I

_{o})

I2=(r1/r2)^2 I1

## The Attempt at a Solution

Found the intensity of 64dB @ 15m I1= 2.51*10^-6

Found the intensity of 53.0dB I2= 1.99 * 10 ^ -7

I used the second forumula ^ to solve for r2...

I got r2 = 10.5m... not sure what to do from here or if I am on the right path... frustrated