Question

in a triangle pqr right angle at q if pq =8cm and pr= 17cm find qr​

Answer 1

Answer:

15

Step-by-step explanation:

pq=8 cm

pr=17cm

By pythagoras theorem

qr=

$\sqrt{ {pr}^{2} - {pq}^{2} } \\ = \sqrt{ {17}^{2} - {8}^{2} } \\ = \sqrt{289 - 64 } \\ = \sqrt{225} \\ = 15$

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Answer 2

Step-by-step explanation:

according to phythagerus theorem

(Hyptonues)²=(side)²+(side)²

(pr)²=(qr)²+(pq)²

(17)²=(qr)²+8²

(qr)²=17²-8²

(qr)²=289-64

(qr)²=225

qr=225½=15

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