[GreenKeys] Length of tape

[Roy Morgan]

At 08:25 PM 2/12/02 -0600, Don Mehl wrote:
>Thanks John,
>How long is a standard roll of tape
... unwinding one to measure it is a waste and besides that I am lazy.

Lazy Don,

1) Measure the thickness of ten layers of tape with a micrometer.  Divide 
by 10 to get the thickness.

2) Measure the diameters of the first and last turn of tape on the roll, 
add them and divide by two to get the diameter of the average 
turn.  Multiply by 3.14 to get the length of the average turn.

3) Subtract the diameter of the inner turn from the diameter of the outer 
turn and divide by two to get the thickness of the layers.

4) Divide this last number by the thickness to get the number of turns.

5) Multiply the number of turns by the length of the average turn to get 
the total length.

6) Divide by the length of tape used in one minute to get the total minutes.

7) Report your results to the list.

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
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