September 2018 1 23 Report
Di ketahui segitiga PQR. Tentukan panjang QR apabila di ketahui :
(a) PQ = 12 cm, PR = 10 cm, dan < QPR = 120°
(b) PQ = 6 cm, PR = 3 \sqrt{3} cm dan Q^{2} = 3 cm
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