A quadrilateral wraps around a semicircle. The two flanking sides are equal to 9 and 16, and the semicircle is centered along the base side. Can you solve for the length of the base side? It's a challenging and fun problem! Special thanks this month to: Mike Robertson, Michael Anvari, Kyle. Thanks to all supporters on Patreon! http://www.patreon.com/mindyourdecisions

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My Books (worldwide links)
https://mindyourdecisions.com/....blog/my-books/#world

My Books (US links)
Mind Your Decisions: Five Book Compilation
https://amzn.to/2pbJ4wR
A collection of 5 books:
"The Joy of Game Theory" rated 4.2/5 stars on 131 reviews
http://amzn.to/1uQvA20
"The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias" rated 3.7/5 stars on 11 reviews
http://amzn.to/1o3FaAg
"40 Paradoxes in Logic, Probability, and Game Theory" rated 3.9/5 stars on 21 reviews
http://amzn.to/1LOCI4U
"The Best Mental Math Tricks" rated 4.4/5 stars on 34 reviews
http://amzn.to/18maAdo
"Multiply Numbers By Drawing Lines" rated 4.5/5 stars on 19 reviews
http://amzn.to/XRm7M4

Mind Your Puzzles: Collection Of Volumes 1 To 3
https://amzn.to/2mMdrJr
A collection of 3 books:
"Math Puzzles Volume 1" rated 4.6/5 stars on 39 reviews
http://amzn.to/1GhUUSH
"Math Puzzles Volume 2" rated 4.5/5 stars on 13 reviews
http://amzn.to/1NKbyCs
"Math Puzzles Volume 3" rated 4.6/5 stars on 11 reviews
http://amzn.to/1NKbGlp

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2017 Shorty Awards Nominee. Mind Your Decisions was nominated in the STEM category (Science, Technology, Engineering, and Math) along with eventual winner Bill Nye; finalists Adam Savage, Dr. Sandra Lee, Simone Giertz, Tim Peake, Unbox Therapy; and other nominees Elon Musk, Gizmoslip, Hope Jahren, Life Noggin, and Nerdwriter.