1. The problem statement, all variables and given/known data A tungsten filament in a lamp is heated to a temperature of 2.30 x 10^3 K by an electric current. The tungsten has an emissivity of 0.31. What is the surface area of the filament if the lamp delivers 35.0 W of power? 2. Relevant equations Stefan's Law (a greek letter that looks like P?) P(net)=ekAT^4 3. The attempt at a solution 35.0=0.31(5.670x10^-8 w/m^2*K^4)(2.30*10^3)^4A 35.0 = 491876.5257A 35.0/491876.5257=A 7.1156069x10^-5 is this correct? Thanks in advance for your help.