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Please, I need help with the math

Please, I need help with the math

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Old 02-04-2011, 01:26 PM
  #11  
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Originally Posted by feline fanatic
Originally Posted by Prism99
Originally Posted by amma
3 X 5 1/2 = 16 1/2" finishing at 16" :D:D:D
Am I wrong? Wouldn't nine 5.5" patches sewn together result in a block that is 15 1/2" square unfinished, 15" finished?
5.5" patches will finish at 16" for the unfinished block 15.5 finished. While 3 x 5.5 does indeed = 16.5 you lose 1/2" (2 1/4" seam allowances) in joining those 3 squares together so you end up with 16" unfinished size and once you set them 15.5 " finished. I think Amma forgot about losing her 1/2" in the seam allowances in her speedy response. :wink:
I'm pretty sure you lose 1" joining the 3 squares (four 1/4" seam allowances instead of two 1/4" seam allowances). Each seam takes up 1/2" of fabric and there are 2 seams when you join 3 squares. So I still think it would be 15.5" unfinished and 15" finished for the block.
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Old 02-04-2011, 02:04 PM
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Poor amma must be feeling really humiliated now that we've beaten her post to death. :oops: :(
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Old 02-04-2011, 03:34 PM
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Originally Posted by ghostrider
Poor amma must be feeling really humiliated now that we've beaten her post to death. :oops: :(
Oh, true. It's happened to me in the past (sigh......) so I'm probably overly eager to be right for once with the math.
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Old 02-04-2011, 03:44 PM
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I'd choose a size that could be divided by 3.
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Old 02-04-2011, 05:56 PM
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Originally Posted by Pinkrose4664
I need to figure out what the size squares I need of 3 fabrics to make a 16 inch 9 patch squares. I am so bad at math.

Thanks
approx. 5 7/8" squares
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Old 02-04-2011, 06:01 PM
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I think it's a trick question...LOL
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