Minggu, 17 April 2016

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Soal Matematika SMP 2

Posted by Unknown on Minggu, 17 April 2016


Bagi yang bisa menjawabnya silahkan dijawab ^_^

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2 komentar:

  1. Ahmad17 April 2016 pukul 15.46

    (Gambar 2)Sin α = Samping/Miring
    Sin 45 = 150/x
    ½ √2 = 150/x
    x = 150/½ √2
    x = 212 m

    BalasHapus
  2. Ari17 April 2016 pukul 16.02

    Luas ABD = (AB x BD)/2
    = (6x8)/2
    = 24 cm

    Luas ADC = 50% lebih besar dari ABC
    = 24 x 1,5
    = 36 cm

    Luas ABC = (ABC+ADC)
    = 24+36
    = 60

    Luas ABC = (AB x BC)/2
    60 = (8 x BC)/2
    BC = 120/8
    = 15

    AC^2 = AB^2 + BC^2
    = 8^2 + 15^2
    = 64 + 225
    = 289
    AC = 17

    DC = BC - BD
    = 15 - 6
    = 9

    AD = 10

    Keliling = 10 + 9 + 17
    = 36

    BalasHapus

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