Question

PT is an altitude of the triangle pqr in which PQ equal to 25 cm PR equal to 17 cm PT equal to 15 cm and QR is equal to x cm. calculate x

Answer 1

In triangle PTQ applying Pythagoras theorem:-
PQ²=PT²+QT²
25²=15²+QT²
QT²=625-225
QT²=400
QT=20 cm
In triangle PTR applying Pythagoras theorem:-
PR²=TR²+PT²
17²=TR²+15²
TR²=289-225
TR²=64
TR=8 cm
QR=QT+TR
=20+8
=28 cm
plz thanks and mark brainliest