Matematika

Pertanyaan

yg bisa tolong bantu jawab+ caranya ya
makasih
no.9&10
yg bisa tolong bantu jawab+ caranya ya makasih no.9&10

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2 Jawaban

  • 10. K = 2Πr
    = 2 x 3.14 x(1/2 x d)
    = 2 x 3.14 x 85
    = 533.8

  • 9.
    K = pi.D
    22 = 22/7.D
    22/7.D = 22
    D = 22:22/7
    D = 22x7/22 = 7

    L = 22/7x7/2x7/2
    = 77/2 = 38,5 A

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