In the given figure, \[\text{AD}=\text{1}.\text{28 cm},\]\[\text{DB}=\text{2}\text{.56 cm},\] \[\text{AE}=0.\text{64 cm}\]. DE will be parallel to BC, if EC = |
A) \[\text{1}.\text{28 cm}\]
B) \[\text{2}\text{.56 cm}\]
C) \[0.\text{64 cm}\]
D) \[0.\text{32 cm}\]
Correct Answer: A
Solution :
[a] \[DE||BC,\] if \[\frac{AD}{DB}=\frac{AE}{BC}\] |
\[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\frac{1.28}{2.56}=\frac{0.64}{EC}\,\,\,\,\,\,\Rightarrow \,\,EC=1.28\,cm\] |
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