These are the coordinates of the system.
f=2.4Ghz,GtGr=1,Pt=18dBm,d=1m,L=1. The wavelength what you find is uniform for all the co-ordinates as they transmit uniform frequency so the wavelength is lamba=0.125
What I did was substituted the values on f and d and GtGr in Free space propagation model and found it as 40dB but after this i have no idea how to proceed.
Based on Rappaport book pg.no 143 I tried calculating the pathloss and variance but there is something missing and I dont know what it is !