What is the diameter of the nozzle of Trent 1000?
It is mentioned here that the fan diameter is about 111-112 inches. So the nozzle must be smaller than that as the engine assembly narrows at its rear end.

This PDF (p.5) shows a diagram of the exhaust nozzle of RR Trent 1000 measuring the diameter as 63 inches. This is the only reference I could find.