Question

if PA=10cm, then find the perimeter of triangle pqr....
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Answer 1

Answer :

20cm

Explanation :

From the diagram, we find the conclusion-

PA = PB

RS = RA

SQ = QB

Perimeter of the ∆PRQ = PR + PQ + RQ

= PR + PQ + RS + SQ ( RS+SQ=RQ)

= PR + PQ + RA + BQ

= (PR + RA) + (PQ+BQ)

= PA + PB

= 10 + 10 = 20cm

Hope it helps!!