In adjoining fig, pq=28,lm=10cm, s is midpoint. Find perimeter of triangle plm
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Answer:
PQ = PT
PL + LQ = PM + MT
PL + LN = PM + MN
Perimeter(∆PLM) = PL + LM + PM
= PL + LN + MN + PM
= PL+ LN+PL+ LN
= 2(PL + LN)
= 2(PL+LQ)
= 2× PQ
= 2 x 28 = 56cm
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