Matematika

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Hitunglah nilai x, y, dan z berdasarkan gambar berikut!
Tolong Dibantu Ya.. :))
Hitunglah nilai x, y, dan z berdasarkan gambar berikut! Tolong Dibantu Ya.. :))

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1 Jawaban

  • jawb
    (1) 
    AB = 22, <AOB = 60
    AB = 60/360. Keliling lingkaran 
    22 = 1/6 . 2. pi. r
    6(22) = 2 pi. r
    3(22) = pi. r
    r= 3(22) : pi =  66 : 22/7
    r = 21 --> y = r = 21

    <COB = 120
    x = 120/60 x 22 cm
    x= 44 cm

    b. 
    z/18 = 80/12
    z = (18 . 80) / 12
    z = 120

    < SOR = 180 - 120 = 60
    x/60 = 18/120
    x = 60 . 18/ 120
    x= 9 

    c. >COD = 180 - 108 = 72
    x/72 = 10/90
    x = (72. 10)/(90)
    x= 8

    y/108 = 10/90
    y = (108 . 10)/(90)
    y = 12

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