5. Perhatikan gambar di bawah ini!15 cm9 cmROPanjang PQ pada gambar di atas adalah​

Jawaban:

RS² = RQ² – SQ²

RS² = 15² – 9²

RS² = 225 – 81

RS² = 144

RS = √144 = 12 cm

RP² + RQ² = (SQ + PS)²

RP² + 15² = (9 + PS)²

RP² = (9 + PS)² – 15²

RP² = RS² + PS²

RP² = 12² + PS²

(9 + PS)² – 15² = 12² + PS²

9² + 18PS + PS² – 15² = 12² + PS²

18PS + PS² – PS² = 12² + 15² – 9²

18PS = 144 + 225 – 81

18PS = 288

PS = 288/18

PS = 16 cm

PQ = PS + SQ = 16 + 9 = 25 cm