Ipilẹ iyaworan
Duro iyaworan apakan
Agbegbe ipilẹ ile
20
m
2
(
20000000
mm
2
)
Agbegbe ti afẹfẹ ọkan
0.012
m
2
(
12272
mm
2
)
Lapapọ agbegbe ti vents
0.061
m
2
(
61359
mm
2
)
Iwọn afẹfẹ
5
pọjù
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