Answer:
In km 7.4168 km
In nautical miles 4 nautical miles
In statute miles 4.6080 miles
Explanation:
We have given scale = 1:40000 on this scale measured distance between A and B is 7.3 inches
So actual distance between A and B = 40000×7.3 = 292000 inches
We know that [tex]1inch=2.54\times 10^{-5}km[/tex]
So 292000 inches = [tex]292000\times 2.54\times 10^{-5}km=7.4168km[/tex]
Now we know that 1 km = 0.5399 nautical miles
So 7.4168 km = 7.4168×0.5399 = 4 nautical miles
We know that 1 km = 0.6213 statute mile
So 7.4168 km = 7.4168×0.6213 = 4.6080 statute mile