Pls help.. idk how to do this
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firstly we have to prove that both triangles i.e. PQS and QSR are congruent.
In PQS and QRS
PQ=QR
∠QSP=∠QSR
QS=QS
hence both triangles are congruent.
So by CPCT PS=SR=15
PR=30
area of PQR=1/2*base*height
=1/2*30cm*8cm
=(30*4)sq.cm
=120 sq.cm
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