Question

Berjasarkan gambar d atas,jika panjang AD=8 cm,BD=2cm,dan BC=5cm, maka tentukan panjang garis DE!

Answer 1

AB / BD = BC / DE
AD+DB / BD = BC / X
8+2 / 2 = 5 / X
X(8+2) = 5×2
8X+2X = 10
10X = 10
  X  = 10/10
      = 1

Answer 2

Dik :                                            Dit : DE = ... ?
AD = 8 cm
DB = 2 cm
BC = 5 cm
AB = AD + DB = 8 + 2 = 10 cm

JAWABANNYA


10 DE = 40
DE =
DE = 4