Question

∆ABC ~ ∆ PQR ,find the length of PQ,if ar(∆ABC)/ar(∆PQR)=9/4 and AB=18cm

Answer 1

ABC similar PQR
ar{ABC}/ar{PQR}={AB/PQ}²
9/4={18/PQ}²
3/2=18/PQ
PQ=12cm


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