How much fuel are they taking on-board? What sort of specific fuel consumption (SFC) does the JF-17 have? Can the JF-17 refuel it's external fuel tanks whilst inflight?What would be the combat radius of JF-17 with 1 aerial refueling from Il-78MP?
What flight profile does their mission dictate? LO, Medium, High? A mixture of these? (hi, lo, hi etc).
What external stores loads are they carrying? Big external fuel tanks? An external targetting pod and/or a navigation pod, recce pod etc? Heavy air to ground or anti-ship missile stores? Relatively light air to air loadouts? What are the drag implications of these stores and what effect does that have on fuel burn?
What speeds are they reaching? Efficient high subsonic cruise profiles or heavy acceleration, high speed with afterburner use? Are they carrying supersonic rated external stores?
How long are they expecting to remain on-station for their assigned mission?
What contingency fuel do they plan to retain for their return flight? What are the PAF's requirements for reserve fuel for landing in case they need to divert or make an additional pass due to a delay on the airfield?
What is the maximum landing weight for the JF-17? Will they have to dump fuel prior to landing?
All of these things have to be answered before "the range or radius" can be determined. Unless all these things can be answered, stating what a particular aircraft's "range or radius" is, is absolutely futile and useful for nothing more than nationalistic chest-beating.