Find the area of the purple shaded region
[2533] Find the area of the purple shaded region - Find the area of the purple shaded region. Express result to the accuracy of 3 decimal. - #brainteasers #math - Correct Answers: 45 - The first user who solved this task is Sanja Šabović
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Find the area of the purple shaded region

Find the area of the purple shaded region. Express result to the accuracy of 3 decimal.
Correct answers: 45
The first user who solved this task is Sanja Šabović.
#brainteasers #math
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Water and Whiskey

A professor of chemistry wanted to teach his 5th grade class a lesson about the evils of liquor, so he produced an experiment that involved a glass of water, a glass of whiskey, and two worms.
"Now, class, closely observe the worms," said the professor while putting a worm into the water.
The worm in the water writhed about, happy as a worm in water could be. He then put the second worm into the whiskey. It curled up and writhed about painfully, then quickly sank to the bottom, dead as a doornail.
"Now, what lesson can we learn from this experiment?" the professor asked.

Johnny, who naturally sits in back, raised his hand and wisely, responded confidently, "Drink whiskey and you won't get worms."

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Electric company

In 1883, a company that would build the first U.S. three-wire central station for incandescent lighting - the Edison Electric Illuminating Co. was incorporated. The plant was a simple wooden structure erected in Sunbury, Pennsylvania. The station began service on 4 Jul 1883. An Armington & Sims steam engine drove two 110-volt direct-current generators. The electricity was delivered by overhead wires. Thomas Edison patented his three-wire system on 20 Nov 1882 to supercede the distribution system used at his first commercial central generating station in New York (4 Sep 1882) because it gave savings of over 60 per cent in copper used in conductors. This meant a smaller investment and enabled building generating plants in smaller communities.«[Images - top: Sunbury generators at the Edison Ford Museum; bottom: Thomas Edison]
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