whongaliem43) BD : DC = 1 : 3 BD : (BC - BD) = 1 : 3 3.BD = BC - BD 3.BD + BD = BC 4.BD = BC BD = BC AB² = BD x BC 6² = .BC x BC 36 = BC² BC² = 36 x 4 BC² = 144 BC = √144 BC = 12 cm 44) AB² = BD x BC 12² = BD x 15 144 = BD x 15 BD = DC = BC - BD DC = 15 - DC = DC = AD² = BD x DC AD² = x AD = AD = AD = 7,2 cm 45 , 46 dst soal tidak terbaca ...mohon maaf ...
auricok
45. pada gambar diatas, diketahui panjang bd = 3 cm dan cd = 12 cm. panjang ad,ab,dan ac berturut turut
ayu1010
No 44 cari dulu panjang AC dengan phytagoras setelah itu AB x AC / 2 = BC x AD / 2 12 x 9 / 2 = 15 x AD /2 54 = 15 AD /2 108 = 15 AD AD = 108 / 15 7,2
BD : (BC - BD) = 1 : 3
3.BD = BC - BD
3.BD + BD = BC
4.BD = BC
BD = BC
AB² = BD x BC
6² = .BC x BC
36 = BC²
BC² = 36 x 4
BC² = 144
BC = √144
BC = 12 cm
44) AB² = BD x BC
12² = BD x 15
144 = BD x 15
BD =
DC = BC - BD
DC = 15 -
DC =
DC =
AD² = BD x DC
AD² = x
AD =
AD =
AD = 7,2 cm
45 , 46 dst soal tidak terbaca ...mohon maaf ...
cari dulu panjang AC dengan phytagoras
setelah itu
AB x AC / 2 = BC x AD / 2
12 x 9 / 2 = 15 x AD /2
54 = 15 AD /2
108 = 15 AD
AD = 108 / 15
7,2