In proton-antiproton annihilation, a proton and an antiproton (a negatively charged particle with the mass of a proton) collide and disappear, producing electromagnetic radiation. Each particle has a mass of 1.67×10−27{\rm kg} and they are at rest just before the annihilation

Part A Find the total energy of the radiation. Give your answers in joules
Part B Find the total energy of the radiation. Give your answers in electron volts.