Question

In triangle PQR angle Q = angle R. If PQ=6cm and QR= 9cm, than find the perimeter of triangle PQR​

Answer 1

9+6+6=21cm

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Answer 2

Answer:

since angle P= angle R

therefore PQ= PR(sides opposite to equal angles)

therefore in ∆PQR,

PQ=6cm , QR=9cm,& PR=6cm

thus , perimeter of ∆PQR= PQ+QR+PR

=6+9+6cm

21cm