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Alan

Alan
Yaygın sembol(ler): A
SI nicelik boyutu: L2
SI birimi: Metrekare (m2)

Alan veya yüz ölçümü, bir yüzeyin uzayda kapladığı iki boyutlu yer miktarını ölçen bir büyüklüktür. SI birim sisteminde temel alan birimi metrekaredir (m²). Diğer alan birimleri bundan türetilebilir:

Ar = 100 metrekare (m²)
Dekar = 1000 metrekareye (m²)
Hektar = 10.000 metrekare (m²)
Kilometrekare = 1.000.000 metrekare (m²)

Bazı geometrik biçimlerin alanları

[değiştir | kaynağı değiştir]
  • Kare A = Kenar a · Kenar a = Kenar a²
  • Dikdörtgen A = Kenar a · Kenar b
  • Üçgen A = Yükseklik · Taban · 0,5
  • Uçurtma A = Köşegen · Köşegen · 0,5
  • Paralelkenar A = Yükseklik · Taban
  • Düzgün altıgen A = Kenar2 · · 0,1
  • Sekizgen A = Kenar2 · 2 · (1+)
  • Elips A = a Ekseni · b Ekseni
  • Yamuk A = (a + c) · h · 0,5
  • Daire A = Yarıçap · Yarıçap · = Çap · Çap · / 4
  • Düzgün Ngen A = [r^2*cos(a)]*n (köşelerinden geçen çemberin yarıçapı r, bu çemberin merkezinden bir kenarın köşelerine çizilen yarıçaplar arası açı a olmak üzere)
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Alan
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