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# tabletop calculation 10" radius circle

#1
11-06-12, 06:50 PM
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Join Date: Jul 2005
Location: USA
Posts: 71

How many 3/4" x5"x48" lumber does it take to create a tabletop with a 55" radius?
John

#2
11-06-12, 07:30 PM
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Join Date: Aug 2009
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14 ?

#3
11-06-12, 08:50 PM
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which is it... 10" radius or 55" radius? (20" diameter or 110" diameter)

...because you mention both figures.

And is the lumber exactly 5" wide?

#4
11-06-12, 10:47 PM
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Join Date: Jul 2005
Location: USA
Posts: 71
55" radius yes the lumber is exactly 5" wide! Could you please show the formula to arrive at the result? Thank you John

#5
11-07-12, 05:32 AM
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Join Date: Feb 2006
Location: USA
Posts: 6,604
Formula

3.1417 x 55 x 55 = 9504 sq in table top

48 x 5 = 240 sq in per board

9504 / 240 = 40 boards

This makes no allowance for waste.

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