Outside the plane, the air temperature is (-32 °C). At what altitude does the plane fly if the temperature above the earth’s surface is (+ 16 °C)?

1) + 16оС – (- 32оС) = 48оС – temperature difference
2) 48оС: 6оС / km = 8 km – aircraft height
Answer: the plane is flying at an altitude of 8 km.

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