Measured in miles, the length is 12,430.
He uses a 17 foot pole.
Yes
it is not nessesery to be tall but it does help
914.4 millimeters
17'
I am not sure what you mean by "direct" - light tends to travel in a straight line. The length of the shadow depends on the length of the pole, and of the height of the Sun.
All lines of longitude run from North pole to South pole, and are all the same length.
Trick question: The pole used in pole vaulting may be any length. There are no restrictions as far as how long a pole can be or how much a pole can weigh. Poles are rated by the weight of the person using it. Looking at a site that sells poles they come in lengths from 7 feet to 16 feet.
18
The rule of thumb for digging a utility pole hole is 10% of the pole's length plus two feet.
They can range from 1.7m for a stand-up tuna rod to 3.7m for a surf fishing pole.