A Rigid Cylinder (15 Cm Radius,15 Cm Height)contains Nitrogen Gas

A rigid cylinder (15 cm radius,15 cm height) contains nitrogen gas (N₂) at standard temperature and pressure.What is the total translational kinetic energy of the gas molecules in the cylinder?

A) 1.6 kJ
B) 0.51 kJ
C) 0.86 kJ
D) 2.7 kJ