Wednesday, February 10, 2010

Rumus Lingkaran

  • Keliling : diameter dikali phi (d x phi) atau phi dikali 2 jari-jari (phi x (r + r)
  • Luas : phi dikali jari-jari dikali jari-jari (phi x r x r)
  • phi = 22/7 = 3,14

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