Water discharges from a horizontal, cylindrical pipe at the rate of 5.00x10^-3 m^3/s. At a point in the pipe where the cross-section is 1.000x10^-3 m^2, the absolute pressure is 1.60x10^5 Pa. What is the pipe radius at a constriction if the pressure there is reduced to 1.20*10^5 Pa?

I know that we are to find the velocity first, which I got 8.944 m/s approximately. Then after I found the radius and the answer I got was 0.0000236, is this correct ?