Kedua bangun di atas sebangun panjang RQ adalah...

RS/CD = PS/AD
RS/9 = 8/6
6.RS = 9.8
6RS = 72
RS = 72/6 = 12 cm

QT = PQ-PT
QT = 18-12 = 6 cm

QR = √RT²+QT²
QR = √8²+6²
QR = √64+36
QR = √100 = 10 cm

Maaf kalo salah