To what height does the plane rise if the temperature outside it is -30, and on the surface +12?

To solve the problem, you first need to determine the temperature difference outside the plane and on the surface of the earth.

To do this, subtract the overboard temperature from the surface temperature value.

We get:

12 – (-30) = 42 degrees.

A decrease in temperature by 6 degrees Celsius occurs with an increase in altitude for each kilometer.

In this case, the lift height of the aircraft will be equal to:

42/6 = 7 km.

Answer: The plane is at an altitude of 7 kilometers or 7000 meters.