Jika trapesium ABCD dan PQRS sebangun jika AB 6cm,BC 5cm,AD 4cm,PQ 9cm,SR 6cm,PQR 57 derajat.maka panjang QR,PS,dan CD masing-masing adalah.. a.10,5 cm , 6cm, 4cm b.10,5 cm , 5cm, 4cm c. 7,5 cm, 6 cm, 5cm d. 7,5 cm,6cm, 4cm (pakai cara yah)
Ridafahmi
QR/CB = PQ/AB QR/5 = 9/6 6 QR = 5 × 9 QR = 45/6 QR = 7,5 cm
QR/5 = 9/6
6 QR = 5 × 9
QR = 45/6
QR = 7,5 cm
PS/AD = PQ/AB
PS/4 = 9/6
6 PS = 4 × 9
PS = 36/6
PS = 6 cm
SR/CD = PQ/AB
6/CD = 9/6
9 CD = 6 × 6
CD = 36/9
CD = 4 cm (D)