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February 2nd, 2014, 07:13 PM  #11 
Global Moderator Joined: Dec 2006 Posts: 21,027 Thanks: 2258 
As "45% of" means "0.45 times", 81cm² is 0.45 times the area to be found. Hence that area is (81/0.45)cm², which is 180cm². 
March 25th, 2014, 12:46 AM  #12  
Guest Joined: Posts: n/a Thanks:  Re: A square is 9 cm side and its area corresponds to 45% Quote:
 
March 25th, 2014, 02:43 AM  #13 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1039  Re: A square is 9 cm side and its area corresponds to 45%
Alice, what is your point in reactivating threads with such comments? Getting ready to lay some spam on us? 

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