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Rajan@2021
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ABC ∼ DEF . If BC = 3 cm, EF = 4 cm and ar(ABC) = 54 cm 2 , then determine the area of ar(DEF)

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In the given question we are to find the area of ΔDEF,  if BC = 3 cm, EF = 4 cm and ar(ABC) = 54 cm2  by using basic proportionality theorem

ML Aggarwal Avichal Publication chapter 13.3, question no 3

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1 Answer

  1. For similar triangles  (BC​/EF)2=ArΔABC​/ArΔDEF

     (3/4)2=54​/Ar(ΔDEF)
    =54×16/9
    =96 cm2

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