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

circumference of earth = 24000 miles

Step-by-step 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 =
`(distance )/(time)`

speed =
`(3000)/(3)`

speed = 1000 mph

now we know speed of earth is

speed =
`(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