Find the area of the shaded figure
[211] Find the area of the shaded figure - Express result to the accuracy of 2 decimal. - #brainteasers #math - Correct Answers: 69 - The first user who solved this task is Djordje Timotijevic
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Find the area of the shaded figure

Express result to the accuracy of 2 decimal.
Correct answers: 69
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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10 yo-yo jokes to celebrate National yo-yo day

1. Why don't yo-yos make good friends?
- Because they always let you down!

2. What did the yo-yo say to the tightrope?
- "Now, that's what I call a string walk!"

3. How do yo-yos cheer each other up?
- They say, "Hang in there, it'll be an up and down ride!"

4. Why was the yo-yo so good at making decisions?
- It always knew how to go back and forth!

5. Why don't yo-yos work in zero gravity?
- They can't deal with the ups and downs!

6. What did the yo-yo say to the super glue?
- "I need someone who won't let go!"

7. Why was the yo-yo the life of the party?
- Because it always knew how to unwind!

8. How did the yo-yo become a successful motivational speaker?
- It always knew how to bounce back!

9. What do yo-yos say when they introduce themselves?
- "I’m not as up-tight as I appear!"

10. Why was the yo-yo accused of being a spy?
- Because it always goes undercover!

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Johann Wilhelm Hittorf

Born 27 Mar 1824; died 28 Nov 1914 at age 90.German physicist who was a pioneer in electrochemical research. His early investigations were on the allotropes (different physical forms) of phosphorus and selenium. He was the first to compute the electricity- carrying capacity of charged atoms and molecules (ions), an important factor in understanding electrochemical reactions. He investigated the migration of ions during electrolysis (1853-59), developed expressions for and measured transport numbers. In 1869, he published his laws governing the migration of ions. For his studies of electrical phenomena in rarefied gases, the Hittorf tube has been named for him. Hittorf determined a number of properties of cathode rays, including (before Crookes) the deflection of the rays by a magnet.
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