1.

PQR is a triangle right angled at P. If PQ=13cm and PR=5cm,findQR

Answer»

Answer:

Step-by-step explanation:

GIVEN PQ = 13CM, PR = 5cm

Angle PQ and PR form a RIGHT angle

So the side opposite to the right angle is the hypotenuse or QR

Therefore  PQ² + PR²  =  QR²

[Pythagoras Theorem A² + B² = C²]

Where C is the hypotenuse or longest side of a triangle

So we have

=>  13² + 5² = QR²

=>  169 + 25 = QR²

=>  194 = QR²

=> QR = √194

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Have a great day ;)



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