1. The problem statement, all variables and given/known data A laser blackboard pointer delevers 0.10-mW average power in a beam 0.90 mm in diameter. 2. Relevant equations a) Find the average intensity. b) Find the peak electric field. c) Find the peak magnetic field. 3. The attempt at a solution ok for part a) i used the formula ave. s = p/4 pie r^2 (as p=.10 mW and r=0.45 mm) but i didnt get the right answer so am i using the wrong formula or the wrong value for r? for part (b) and (c) i cant do anythin bout it cuz i need the average intensity in order to find the elecric and magnetic fields. somebody plez help me asap....thanx!!