How To Solve The Rectangle Length Puzzle - Think INSIDE The Box!

Thanks to Raoul from Indonesia! This problem stumped me, but I persisted and eventually figured it out. The key was thinking inside the box!

My blog post for this video
https://wp.me/p6aMk-83j

Playlist to watch all videos on MindYourDecisions
   • Uploads from MindYourDecisions  

Thanks to all patrons! Special thanks to:
Yildiz Kabaran
Shrihari Puranik
Kyle

This is the only channel to feature math topics suggested by people around the world. Support the channel on Patreon so we can share the beauty of mathematics and make the world a better place:
  / mindyourdecisions  
If you buy from the links below I may receive a commission for sales. This has no effect on the price for you.

My Books
"The Joy of Game Theory" shows how you can use math to out-think your competition. (rated 4/5 stars on 34 reviews)
http://amzn.to/1uQvA20

"The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias" is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 4.6/5 stars on 3 reviews)
http://amzn.to/1o3FaAg

"Math Puzzles Volume 1" features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.
http://amzn.to/1GhUUSH

"Math Puzzles Volume 2" is a sequel book with more great problems. (rated 4.3/5 stars on 4 reviews)
http://amzn.to/1NKbyCs

"Math Puzzles Volume 3" is the third in the series. (rated 4/5 stars on 6 reviews)
http://amzn.to/1NKbGlp

"40 Paradoxes in Logic, Probability, and Game Theory" contains thought-provoking and counter-intuitive results. (rated 4.4/5 stars on 13 reviews)
http://amzn.to/1LOCI4U

"The Best Mental Math Tricks" teaches how you can look like a math genius by solving problems in your head (rated 4.8/5 stars on 5 reviews)
http://amzn.to/18maAdo

"Multiply Numbers By Drawing Lines" This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 4.4/5 stars on 5 reviews)
http://amzn.to/XRm7M4

Connect with me
My Blog: https://mindyourdecisions.com/blog/
Twitter:   / preshtalwalkar  
Facebook:   / 168446714965  
Google+: https://plus.google.com/1083366085665...
Pinterest:   / preshtalwalkar  
Tumblr:   / preshtalwalkar  
Instagram:   / preshtalwalkar  
Patreon:   / mindyourdecisions  

Newsletter (sent only for big news, like a new book release): http://eepurl.com/KvS0r