Ideal gas undergoing cycle change - find temperature

[Amith2006]

Sir,
One mole of an ideal gas undergoes a cycle change as shown in figure. The process A-B is isothermal. The pressure and volume at A is 1.1 x 10^5 N/m^2 and 22.4 litres respectively. What is the temperature of the gas at C?
If the temperature at one point was given the temperature at the other point could be calculated. Here only the pressure and volume are given.

 

[Andrew Mason]

Sir,
One mole of an ideal gas undergoes a cycle change as shown in figure. The process A-B is isothermal. The pressure and volume at A is 1.1 x 10^5 N/m^2 and 22.4 litres respectively. What is the temperature of the gas at C?
If the temperature at one point was given the temperature at the other point could be calculated. Here only the pressure and volume are given.

PV=nRT

AM