i have a small doubt the vhf formula
D=1.25 * Sq(h1) + 1.25 * Sq (h2)
D IS IN NM
H1&H2 are the altitudes of station and ac in feet amsl
where as in the question FL are used for ac
and for FL are 29.92hg or 1013.25hpa
and sq(1.5*height) is same as D=1.25 * Sq(h1) + 1.25 * Sq (h2)
because square root of 1.5 is 1.22 or 1.25 aprox
may be because of the ac vertical distance given in FL we are not getting the correct ans
