1) Calculate the hydraulics radius( Rh) of a flow flowing through annulus section of a circular pipe (radius =1 inch) into a square pipe (15cm per side). Express Rh in "inch". 2) Calculate the velocity (at units of inch/s) of a full flow flowing through a triangle pipe, with 0,5cm per side. Mass flow rate =800KgH2O/hour. (5 pts) 3) Calculate the Reynolds number for a fluid flowing through circular pipe (diameter =1 inch) Datas: SG=07:15cm,O=10 liter /min. (5 pts)