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Given that DEF ABC if the area of ABC is 9...

This question belongs to Arithmetic Ability Geometry
Geometry
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Given that ΔDEF ∽ ΔABC, if the area of ΔABC is 9 cm2 and that of ΔDEF = 12 cm2 and BC = 2.1 cm, then the length of EF is:

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Correct Answer: Option B
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