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 December 6th, 2017, 10:30 PM #1 Newbie   Joined: Dec 2017 From: Iran Posts: 3 Thanks: 0 divide paper to rectangles We have a paper with dimensions 300 millimetres × 210 millimetres. We want to divide it to equal rectangles that their length is twice the width. what is the dimensions of the biggest rectangle we can use? Proof it. tnx
 December 7th, 2017, 12:40 AM #2 Global Moderator     Joined: Oct 2008 From: London, Ontario, Canada - The Forest City Posts: 7,963 Thanks: 1148 Math Focus: Elementary mathematics and beyond 60 mm $\times$ 30 mm
 December 7th, 2017, 01:03 AM #3 Newbie   Joined: Dec 2017 From: Iran Posts: 3 Thanks: 0 need proof Can you please show me how?
 December 7th, 2017, 02:40 AM #4 Global Moderator     Joined: Oct 2008 From: London, Ontario, Canada - The Forest City Posts: 7,963 Thanks: 1148 Math Focus: Elementary mathematics and beyond Factor 300 and 210 then look for a factor of 300 that's twice a factor of 210.

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