Matematika

Pertanyaan

panjang AD adalah...
panjang AD adalah...

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2 Jawaban

  • AD = y

    8/12 = y/3+y
    8 (3+y) = 12 x y
    24 + 8y = 12y
    24 = 4y
    6 = y

    AD = 6cm

  • misal AD = x
    x : AB = DE : BC
    x : (x+3) = 8 : 12
    12x = 8(x+3)
    12x = 8x + 24
    12x -8x = 24
    4x = 24
    x = 6

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