" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Pertama, lihat pada segitiga APCAP = 6 cm
AC = Ra + 2Rb
AC = 6 + 2(2) = 10 cm
QT = 2,4 cm
AP² + PC² = AC²
6² + PC² = 10²
36 + PC² = 100
PC² = 64
PC = 8 cm
kemudian, pakai rumus segitiga sebangun
CQ : PC = QT : AP
CQ : 8 = 2,4 : 6
CQ = 2,4 : 6 x 8
CQ = 3,2 cm
PC = PQ + CQ
8 = PQ + 3,2
PQ = 8 - 3,2
PQ = 4,8 cm (C)
Verified answer
QT = 2,4 = 24/10 = 12/5panjang QC
= √(TC² - QT²)
= √(4² - (12/5)²)
= √(16 - 144/25)
= √(400/25 - 144/25)
= √(256/25)
= 16/5 cm
PANJANG PQ (pakai perbandingan)
PA : (PQ + QC) = QT : QC
6 : (PQ + 16/5) = 12/5 : 16/5
6 × 16/5 = 12/5(PQ + 16/5)
96/5 = (12/5)PQ + 192/25
(12/5)PQ = 480/25 - 192/25
(12/5)PQ = 288/25
PQ = 288/25 × 5/12
PQ = 24/5 = 4,8 cm (C).