by Ari Lox
How high is that noisy aircraft?
How high is that airplane?
Outside, I extended my right arm when the next jet came overhead. The plane's length was covered by the tip of my finger to the second knuckle.
That gave me similar triangles. One from my eye to my finger, the other from my eye to the plane.
That is, the 2" of my finger is 2' from my eye and the 230' length of the plane is x' from me.
Thus, 2"/2' = 230'/x.
With 2" = 1/6', 1/12 = 230'/x
Or x = 230' * 12 = 2760'
At my house, the airplane is still about 1/2 mile up.