A) \[2.5\]
B) \[3\]
C) \[5\]
D) \[6\]
Correct Answer: B
Solution :
[b] \[\frac{AD}{AB}=\frac{DE}{BC}\,\,\,\,\,\,\,\,\,\Rightarrow \,\,\,\,\frac{2}{2+3}=\frac{DE}{7.5}\] |
\[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,DE=\frac{2\times 7.5}{5}\] |
\[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,DE=3cm\] |
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