Answer
135 dB
Work Step by Step
The intensity is given by equation 11–18, $I=2 \pi^2 \rho v f^2 A^2$.
Using the density of air and the speed of sound in air, find the intensity.
$$I=2 \pi^2 (1.29kg/m^3) (343m/s) (440Hz)^2 (0.00013m)^2=28.576W/m^2$$
$$\beta=10log\frac{I}{I_o}=10 log\frac{28.576W/m^2}{1.0\times10^{-12}W/m^2}\approx 135 dB$$
Ouch.
