A chef was preparing dinner for some very special guests, so he had to use oat flour. While he was preparing it in his large kitchen at the restaurant, one of the employees entered quickly, due to the storm outside. As he did this, a gust of wind blew in all the ingredients, including the flour. Calculate how far the employee must sweep after the flour falls to the ground. Consider that the wind gust was $23$ km$/$h and that the flour has a particle size of $174$ m in diameter, with a density of $4600$ kg$/$m$.^3,$ the height of the counter where the ingredients were is $1\mathrm{.}3$ m$.$ The average temperature is $22$C and $1$ atm. The viscosity of air $1\mathrm{.}81$x$10$ poise.