Thinyx
DE = 12 cm BD = be - ad = 18-12 = 6 misal bc = x af/db = ac/bc 18/6 = 18+x/x 3x = 18+x 2x = 18 x = 9cm bc = x = 9 cm
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AuliaCipa
Jawabannya adalah 9 cm caranya : DE = 12 cm BD = be - ad = 18-12 = 6 misal bc = x af/db = ac/bc 18/6 = 18+x/x 3x = 18+x 2x = 18 x = 9 bc = x = 9 cm
BD = be - ad = 18-12 = 6
misal bc = x
af/db = ac/bc
18/6 = 18+x/x
3x = 18+x
2x = 18
x = 9cm
bc = x = 9 cm
caranya :
DE = 12 cm
BD = be - ad = 18-12 = 6
misal bc = x
af/db = ac/bc
18/6 = 18+x/x
3x = 18+x
2x = 18
x = 9
bc = x = 9 cm