CNZ

thanks both of you. I am grateful.

But please elaborate a little as to how this was the starting line: Area of ADG/ Area of CDE=AD^2/CD^2

Yah I am familar with the concept of similarity. However, I was unable to see that this question requires that concept. Thanks a lot for your help. I am indebted. Regards and Respect

[ATTACH=CONFIG]6829[/ATTACH][ATTACH=CONFIG]6829[/ATTACH] Please help me solve the questions. The answer of Question 8 is NO=30 and OP=10 times square root of 34. The answer of Question 9 is 378. An urgent reply shall be highly appreciated.