Capella is the same temperature as our sun, but about ten times the suns diamter; it must be about_____ times as luminous as our star. Could someone please tell me how to solve this type of problem?? I am aware of the formula R=sqrt(L)/Temp squared. But I'm not sure how to apply that here. Inserting my own made up radius of 2 for the sun and 20 for Capella, I come up with the answer being "100 times as luminous". But I fee like Im missing something... Thanks!