Random junk Puzzle 10/08/2010 kirsch 7 Comments I saw this puzzle earlier today and thought it was clever enough to repost. Without measuring and using only the information on the image, can you calculate the radius of the circle? If you get the answer, say so in the comments, but don’t write the answer itself!

As engineers, we try to solve everything with equations…It took me like 6 minutes to realize that an equation was not going to do it… it’s simply a deduction and trial and error puzzle. Very clever. I like! Reply

I got the diameter right away. The radius… still working on it… seems a bit more tricky… mmmhhhhhh……. back to my abacus. Reply

Done! It just took a cup of Coffee to kick in to jet the answer.

“GET” not jet… Thank you auto spelling.

Duh, I even wrote down some equations before it hit me.

As engineers, we try to solve everything with equations…It took me like 6 minutes to realize that an equation was not going to do it… it’s simply a deduction and trial and error puzzle. Very clever.

I like!

I got the diameter right away.

The radius… still working on it… seems a bit more tricky…

mmmhhhhhh……. back to my abacus.

took me entirely too long…. but i finally got it… and felt silly. nice find!

that’s an easy one! dying to post the answer 🙂