A) 11 cm
B) 5 cm
C) 6 cm
D) 9 cm
Correct Answer: D
Solution :
In \[\Delta GEF\]and \[\Delta GCD,\] we have \[\angle EGF=\angle CGD\](alternate angles) \[\angle EGF=\angle CGD\](vertically opposite angles) \[\Delta GEF\sim \Delta GCD\] \[\therefore \] \[\frac{GE}{CG}=\frac{EF}{CD}\]\[\Rightarrow \]\[\frac{5}{10}=\frac{EF}{18}\] \[\Rightarrow \]\[EF=\frac{5\times 18}{10}=9\,\,\text{cm}\]You need to login to perform this action.
You will be redirected in
3 sec