Question

Bantuin kak pliss,sius yah besok mau dikumpul
Perhatikan gambar diatas. Jika segitiga ABC kongruen dengan segitiga KLM, maka panjang KL adalah

Answer 1

Δ ABC kongruen  Δ MKL
AB = MK
BC = KL = y-2x
AC = ML --> 15 = x² -10
x² = 25
x = 5
y = 2(x) = 2(5)= 10
KL = BC = 10

Answer 2

ΔABC kongruen ΔKLM
BC = y = 2x
Maka, KL = BC = y = 2x
dan, AC = ML

Cari nilai x

AC = ML
15 = x² - 10
x² = 15 + 10
x² = 25
x = √25
x = 5 cm

Cari nilai y
y = 2x
y = 2×5
y = 10 cm

KL = AB = y
KL = 10 cm

Jadi, panjang KL = 10 cm

Semoga membantu :)