April 2nd, 2018, 08:50 AM  #1 
Newbie Joined: Apr 2018 From: repentigny Posts: 2 Thanks: 0  Basic Geometry HELP!!!!
I need to find "D" area please refer to attachment

April 2nd, 2018, 11:54 AM  #2 
Senior Member Joined: Feb 2010 Posts: 714 Thanks: 151 
If region D is a parallelogram then the area is 3840. However that is not given and the picture seems to imply that region C is an equilateral triangle. If C is an equilateral triangle then D cannot be a parallelogram. You need to provide some additional information. Either say that D is a parallelogram or C is equilateral. Last edited by mrtwhs; April 2nd, 2018 at 11:57 AM. Reason: correction. 
April 2nd, 2018, 01:42 PM  #3 
Global Moderator Joined: May 2007 Posts: 6,834 Thanks: 733 
D is certainly not a parallelogram. C looks like an isosceles triangle, equilateral is not needed.

April 2nd, 2018, 02:31 PM  #4 
Newbie Joined: Apr 2018 From: repentigny Posts: 2 Thanks: 0 
would you guys be kind enough to solve it for me?

April 2nd, 2018, 03:37 PM  #5 
Senior Member Joined: Feb 2010 Posts: 714 Thanks: 151 
I agree with everything mathman said. However the OP never said the triangle was isosceles so as stated, the problem cannot be solved.


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