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OpenStudy (anonymous):
AREA OF OCTOGON???
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OpenStudy (anonymous):
OpenStudy (habbster):
(22)(8)= perimeter
OpenStudy (habbster):
1/2 (perimeter)(apothem)
jimthompson5910 (jim_thompson5910):
As drawn earlier, you can divide the polygon into these triangles |dw:1358922347396:dw|
OpenStudy (anonymous):
176 is the perimeter?
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jimthompson5910 (jim_thompson5910):
focus on one triangle, find it's area and multiply that area by 8 (since there are 8 congruent triangles) |dw:1358922414930:dw|
OpenStudy (habbster):
yup
OpenStudy (anonymous):
then what's the apothem? :)
jimthompson5910 (jim_thompson5910):
|dw:1358922457216:dw|
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