A) \[\text{27}\,\text{cm}\]
B) \[\text{3 cm}\]
C) \[\text{6 cm}\]
D) \[\text{9 cm}\]
Correct Answer: A
Solution :
[a] \[\Delta ABC\tilde{\ }\Delta DEF\] |
\[\therefore \,\,\,\,\,\,\,\,\frac{AB}{DE}=\frac{BC}{EF}\,\,\,\,\,\,\Rightarrow \,\,\frac{AB}{3\,AB}=\frac{9}{EF}\] \[[3AB=DE]\] |
\[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,EF=27cm\] |
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