Question

in a right triangles PQR , Q=90 degree .if PQ =9cm .QR=12cm ,find PR .
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Answer 1

hey buddy,

here is your answer..

Answer:

PQ=15cm

Step-by-step explanation:

In triangle PQR

(given)

• Q=90°
• PQ=9cm
• QR=12cm

(to find)

• PR=?

(Method)

Apply Pythagoras theorem in Δ PQR

$(pr) {}^{2} = (pq) {}^{2} + (qr) {}^{2} \\ (pr) {}^{2} = {9}^{2} + {12}^{2} \\ pr = \sqrt{81 + 144} \\ pr = \sqrt{225} = 15$

PR = 15

I hope it helps you

thank you

have a great day ahead. ✌✌☺

Answer 2

Answer:

15

Step-by-step explanation:

Q = 90°

PQ = 9 cm

and QR=12 cm

we have to find PR

Apply pythagoras theoram in ∆PQR

(pr)² = (pq)² + (qr)²

(pr)² = (9)² + (12)²

(pr)² = 81 + 114

pr = √81 + 144

pr = √225 => 15