Chinyamabille Chinyamabille

03-03-2021
Mathematics

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PN is an altitude of triangle PQR. If PN=24cm and PQ=PR=25cm. Find QR

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thebecks thebecks

03-03-2021

Answer:

QR = 14 cm

Step-by-step explanation:

using the Pythagorean theorem:

25^2 - 24^2 = RN^2

625 - 576 = 49

RN = 7

NQ = RN

QR = RN+NQ

QR = 7 + 7 = 14 cm

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