… it’s been too long …
Could someone tell me the length of the yellow arc? I need to figure out what size greenhouse film I need for my Sunflower House…. Thank you!
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- Greener Thumb
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there are 2 ways to interpret this
this assumes that the yellow is a half circle with 2 short straight segments
the radius is 38.5 in this calculation ( 77 divided by 2 )
c = 2 x pi x r
c = 2 x 3.14 x 38.5
c = 241.78
241.78 divided by 2 = 120.89
120.89 + 7.5 + 7.5 = 135.89
please get a 2nd opinion
it’s been a while for me too
this assumes that the yellow is a half circle with 2 short straight segments
the radius is 38.5 in this calculation ( 77 divided by 2 )
c = 2 x pi x r
c = 2 x 3.14 x 38.5
c = 241.78
241.78 divided by 2 = 120.89
120.89 + 7.5 + 7.5 = 135.89
please get a 2nd opinion
it’s been a while for me too
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- Greener Thumb
- Posts: 1216
- Joined: Sat Jul 18, 2015 1:10 pm
- Location: Zone 8A Western Washington State
I checked this graphically and 135.9 is the correct length, if an arc with 2 short straight segments. The straight segments would each be 7.5
Another way would be for the arc have a 46 inch radius and no straight segments. It would be slightly bowed at the bottom where it meets the top of the wall.
I did this graphically and the length of the curve measures 136.7
Another way would be for the arc have a 46 inch radius and no straight segments. It would be slightly bowed at the bottom where it meets the top of the wall.
I did this graphically and the length of the curve measures 136.7
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- Super Green Thumb
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The problem here is that's not a perfect arc - if this were the case, the height would be half of 77, or the diameter would be double 46, or 92. Then, in each case the arc would be half the circumference, which is 2πr. So the 180° arc, if in a circle, would be πr. So if 46 was the radius, it would be about 144.5. And if the radius was half of 77, or 38.5, the arc would be about 120.95. So you are going to need somewhere in between these, and I would err on the larger side