Matematika

Pertanyaan

1 jika kurang jelas diameternya 28..Susut aob 108..trim..cptt ya
1 jika kurang jelas diameternya 28..Susut aob 108..trim..cptt ya

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1 Jawaban

  • r = 1/2 × d
    r = 1/2 × 28
    r = 14 cm

    Luas juring OAB = Sudut pusat/360° × πr²
    = 108°/360° × 22/7 × 14²
    = 108°/360° × 22/7 × 196
    = 108°/360° × 616
    = 184,8

    Jawabannya C.

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