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área do círculo

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Como determinar a área do círculo? determinação da fórmula.

Como determinar a área do círculo? determinação da fórmula.

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Transcript

  • 1. A área do círculo
  • 2.
  • 3.
  • 4. Perímetro do círculo = 2X π X r
    Raio do círculo =
    r
  • 5. Círculo verde
    Círculo azul
  • 6. 2X π X r
    r
    Área de um paralelogramo = c x a
    Área dos dois círculos = 2x π x r x r = 2 x π x r2
    Área de um círculo = 2 x π x r2 : 2 = π x r2
  • 7. Área do círculo = π x r2
  • 8. Baseado em: http://viajarnamatematica.ese.ipp.pt/moodle/file.php/1/vnm-v0/conteudo/Area_do_Circulo.html