Is there anymore information?
If the plane descends entirely to the airport runway then it would be zero.
20x^4 + 8x^3 + 40x^2
(20x)(20x)(20x)(20x)+(8x)(8x)(8x)+(40)(40)
Height = 4cm is the correct answer
Answer:
For upper bound, the length is 88.5 cm and width is 49.5 cm
For lower bound, the length is 87.5 cm and width is 48.5 cm
