Question

New York and Los Angeles are about 3000 mi apart, the time difference between these two cities is 3 h. Calculate the circumference of the Earth.

Answer 1

Answer:

circumference of earth = 24000 miles

Explanation:

given data

New York and Los Angeles distance = 3000 mi

time difference = 3 h

to find out

circumference of the Earth

solution

we find speed first that is

speed = $\frac{distance }{time}$

speed = $\frac{3000}{3}$

speed = 1000 mph

now we know speed of earth is

speed = $\frac{circumference of earth}{time of rotation}$

so

circumference = speed × time of rotation

and we know earth take 24 hours to rotate at its axis

so

circumference of earth = 1000 × 24

circumference of earth = 24000 miles