document.write( "Question 990884: I have a 24 foot pool inside a deck. I want to put a border around the pool using 1X6 boards. There are 16 sides and 16 angles. How long to I cut each side and at what angle to I cut the boards? I tried 360/16 and got 22.5, but when I cut the boards at that angle, it was incorrect. \n" ); document.write( "
Algebra.Com's Answer #610905 by macston(5194)\"\" \"About 
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You want to put a 16-sided regular polygonal {Hexadecagonal) deck
\n" ); document.write( "around a 24 foot circular pool.
\n" ); document.write( ".
\n" ); document.write( "The angle between sides,x (interior angle):(n=number of sides=16)
\n" ); document.write( "\"x=%28%28n-2%29%2Fn%29+%2A+180\"
\n" ); document.write( "\"x=%28%2816-2%29%2F16%29%2A180\"
\n" ); document.write( "\"x=%2814%2F16%29%2A180\"
\n" ); document.write( "\"x=157.5\" The angle to cut is 1/2 this angle.
\n" ); document.write( "ANSWER 1: The angle to cut is 78.75 degrees (both ends).
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\n" ); document.write( "For each side tangent to a 24 foot circle:
\n" ); document.write( "(each side of the deck will touch the pool at its midpoint)
\n" ); document.write( ".
\n" ); document.write( "a=side length; r=radius=12 feet
\n" ); document.write( ".
\n" ); document.write( "\"a=2rtan%28180%2Fn%29\"
\n" ); document.write( "\"a=2%2812ft%29tan%28180%2F16%29\"
\n" ); document.write( "\"a=24ft%280.1989%29\"
\n" ); document.write( "\"a=4.77ft\"
\n" ); document.write( "ANSWER 2:The side length is 4 feet 9 and 1/4 inch.\r
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