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OpenStudy (anonymous):
In right triangle PQR where R is the right angle, PQ=13, QR=12, what is the length of PR ?
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OpenStudy (anonymous):
sqrt(13^2-12^2)
OpenStudy (anonymous):
5
OpenStudy (anonymous):
if u draw the diagram, you will find that PQ is the hypotenuse of the right angled triangle PQR. By Pythagoras Theorem, H² = P² + B² means PQ² = PR² + QR² 13² = PR² + 12² 169 = PR² + 144 169-144 = PR² 25 = PR² PR = root(25) PR = 5
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