If PQ = 28cm, then find the perimeter of ∆PLM

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  1. Class 10
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Transcript

Question 8 If PQ = 28cm, then find the perimeter of ∆PLMSince Length of tangents drawn from external point are equal PQ = PT PL + LQ = PM + MT Since Length of tangents drawn from point L and Mare equal PL + LN = PM + NM Now, Perimeter Δ PLM = PL + LM + PM = PL + LN + NM + PM = PL + LN + PL + LN = 2(PL + LN) = 2(PL + LQ) = 2 × PQ = 2 × 28 = 56 cm

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.