To what altitude did the plane climb if the air temperature outside it was -30, and at the surface of the

To what altitude did the plane climb if the air temperature outside it was -30, and at the surface of the Earth at this time +24, and why?

Due to the fact that solar heat is concentrated at the surface of the earth, from which the rays are reflected, then at the surface it is always somewhat warmer than at altitude. Average cooling occurs by about 6 degrees when climbing to an altitude of 1000 meters. In some cases, the number may be slightly different.

In this case, the total cooling is 24 – (-30) = 54 degrees.

Therefore, the total height to which the aircraft rises is:

H = 54/6 * 1000 = 9 * 1000 = 9000 meters above surface level.