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Landing Pad Geometry

Landing Pad GeometryHmm...high school geometry. Fortunately I have a son at high school...If you are starting with a set number of bulkheads work out the total width of them all, which will be the circumference of your circle (near enough). Since the circumference of a circle is its diameter x pi, the diameter will be circumference divided by pi (pi is 3.14, remember?).

So, add up the total widths of your bulkheads and divide it by 3.14 to get the diameter, and then take half of this to get the radius to set your compass to, OK?

On the other hand if you want a landing pad, say, 12 inches across then you will need a length of bulkheads that is 12 x 3.14 = 37.7 inches long. Cut your card to this length and then divide it up into even bulkheads.

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