JEE Main 2022 · 27 Jun · Shift 1, Physics question 58

The height of a transmitting antenna at the top of a tower is 25 m and that of receiving antenna is, 49 m. The maximum distance between them, for satisfactory communication in LOS (Line-Of-Sight) is $K\sqrt5\times10^2$ m. The value of K is ______.

(Assume radius of Earth is $64\times10^{+5}$ m) [Calculate upto nearest integer value]