Jawabanmu

2014-01-07T15:56:08+07:00
PQ =9 - 1 = 8
QR = 7 - 1 = 6

Panjang PR dapat dihitung menggunakan Phytagoras

PR =  \sqrt{8 ^{2} + {6 ^{2}}
PR =  \sqrt{100}
PR = 10
2014-01-07T16:30:12+07:00