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17²=8²+ QR²
289 = 64 + QR²
QR²=225
QR=√225\
QR=15 CM
8,17, 15
qr=15
bisa diuraikan.
qr^2= pr^2-pq^2
qr^2=17^2-8^2
qr^2=289-64
qr^2=225
qr= akar dari 225
qr=15