Matematika

Pertanyaan

Pakai Cara Poin Pro
GAK PAKAI REPORT
Pakai Cara Poin Pro GAK PAKAI REPORT

1 Jawaban

  • Volume kerucut
    r = 3 cm
    s = 5 cm

    t² = s² - r²
       = 5² - 3²
       = 25 - 9
       = 16
    t = √16
      = 4 cm

    Volume = 1/3.π.r².t
                 = 1/3 x 3,14 x 3² x 4
                 = 1/3 x 3,14 x 9 x 4
                 = 37,68 cm³

    Volume setengah Bola
    r = 3 cm

    Volume = 1/2 x 4/3.π.r³
                 = 1/2 x 4/3 x 3,14 x 3³
                 = 1/2 x 4/3 x 3,14 x 27
                 = 56,52 cm³

    Volume Bandul
    V = Volume Kerucut + Volume setengah bola
        = 37,68 cm³ + 56,52 cm³
        = 94,2 cm³

    Berat Bandul
    Berat = 94,2 cm³ x 0,05 gram/cm³
              = 4,71 gram

    Jawaban A