Water at $20C$ is flowing down a pipe that has a radius of $0\mathrm{.}125mm=1\mathrm{.}25{10}^{-4}m$ and the average flow speed is $0\mathrm{.}800\frac{m}{s}?$ At this temperature the density of water is $998k\frac{g}{m^3}.$ The Reynolds number is and the flow is turbulent.

$1\mathrm{.}97{10}^2$

$2\mathrm{.}18{10}^3$

$3\mathrm{.}19{10}^3$

$5\mathrm{.}18{10}^4$