A single screw extruder is operating at a rotational speed of 2 revolutions per second for the extrusion of a Newtonian polymer under open-discharge conditions (in absence of a die, the pressure drop, \( \Delta p = 0 \)). The extruder has a screw diameter, \( D = 5 \, \text{cm} \), a channel depth, \( H = 0.4 \, \text{cm} \), distance between flights, \( W = 1 \, \text{cm} \), and a helix angle, \( \theta = 20^\circ \). Assume the value of \( \pi = 3.14 \). The volumetric flow rate (rounded off to 2 decimal places) is \(\underline{\hspace{2cm}}\) cm3/s.