A TV tower has a height of 200 m. the population covered by TV broadcast would be (radius of earth = $6.4 \times 10^6 m$ and the average density of population = $10^3 Km^{-2}$)

40 lakh 60 lakh 80 lakh 90 lakh

80 lakh

The correct answer is Option (3) → 80 lakh