It is @ twenty feet
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.
If a fishing pole is 62 linear inches long, it means the total length of the pole when measured from end to end along the curve is 62 inches. The exact length of the straight fishing pole would vary depending on the curvature of the pole. However, a fishing pole less than or equal to 62 inches in length can have a linear measurement of 62 inches.
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
To plumb a tapered pole, use a plumb bob at various locations along the length of the pole to ensure it is perfectly vertical. Make adjustments as needed by inserting shims or spacers to maintain alignment. Repeat this process until the entire length of the pole is properly plumbed.