tolong dong :) ,ini soal kls 9

BD=½ AC
AD=8
AB=AC
Semoga Jawaban Ini membantu

Diketahui :
CD = 8
AC = 10

Ditanya :
a. BD = ....?
b. AD = ....?
c. AB = ....?

Penyelesaian :
a. BD
AC² = CD × BC
10² = 8 × BC
100 = 8BC
12,5 = BC
BC = 12,5

BD = 12,5 - 8
BD = 4,5

b. AD
AD² = CD × BD
AD² = 8 × 4,5
AD² = 36
AD = √36
AD = 6 cm

c. AB
AB² = BD × BC
AB² = 4,5 × 12,5
AB² = 56,25
AB = √56,25

Maaf Kalau Salah