How to determine Flagpole’s height

A group of managers were given the assignment to measure the height of a flagpole. So they go out to the flagpole with ladders and tape measures, and they're falling off the ladders, dropping the tape measures - the whole thing is just a mess.

A Software Tester comes that way and sees what they(managers) are trying to do; walks over, pulls the flagpole out of the ground, lays it flat, measures it from end to end & gives the measurement to one of the managers and walks away.

After the tester's depart from that place, one manager turns to another and both starts laughing. "He prove that, he is just a software tester! We're looking for the height and he gives us the length! How illogically he understands our necessity".

Courtesy for the initial 2 paragraphs : Jokemasters | last paragraph I modified.