\(A = \pi d_T^{2}\) \(\,\pi \,\,{\left( {\sqrt {2{h_T}R} } \right)^2}\, = \,\,2\pi {h_T}R\,\, = \,\,2\,\, \times \,\,3.14\,\, \times \,\,150\,\, \times \,\,6.4\,\, \times \,\,{10^6}\,\)

\( = \,\,6028.8\,\, \times \,\,{10^6}\,\,{m^2}\,\, = \,\,6028.8\,\,k{m^2}\)

વસ્તી ઘનતા=વસ્તી/ ક્ષેત્રફળ \(\, = \,\,\frac{{50\,\, \times \,\,{{10}^5}}}{{6028.8}}\,\, = \,\,829.3/\,\,k{m^2}\)