Question

in ∆pqr, ∠pqr =90°. pr =13 and qr =5 cm the length of pq​

Answer 1

Step-by-step explanation:

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Answer 2

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Answer:

Length of PQ = 12cm

Step-by-step explanation:

Given:- In ΔPQR, anglePQR = 90°

           PR = 13cm, QR = 5cm

To Find:- Length of PQ

Solution:- In right-angled triangle,

                By pythagoras theorem,

(as we know, PQ- perpendicular, QR- base, PR- hypotenuse)

∴PR² = PQ² + QR²

∴13² = PQ² + 5²

∴169 = PQ² + 25

∴169 - 25 = PQ²

∴PQ² = 144 (taking square root on both sides we get)

⇒PQ = 12

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