Find the ratio of the areas of two squares
[653] Find the ratio of the areas of two squares - Find the ratio of the areas of two squares. Express result to the accuracy of 3 decimal. - #brainteasers #math - Correct Answers: 38 - The first user who solved this task is Djordje Timotijevic
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Find the ratio of the areas of two squares

Find the ratio of the areas of two squares. Express result to the accuracy of 3 decimal.
Correct answers: 38
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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A plane leaves Los Angeles air...

A plane leaves Los Angeles airport under the control of a Jewish captain. His copilot is Chinese. It's the first time they've flown together, and an awkward silence between the two seems to indicate a mutual dislike.
Once they reach cruising altitude, the Jewish captain activates the auto-pilot, leans back in his seat, and mutters, "I don't like Chinese."
"No like Chinese?" asks the copilot, "Why?"
"You people bombed Pearl Harbor, that's why!"
"No, no," the co-pilot protests, "Chinese not bomb Peahl Hahbah! That Japanese, not Chinese."
"Japanese, Chinese, Vietnamese... doesn't matter, you're all alike!"
There's a few minutes of silence...
"I no like Jews either!" the copilot suddenly announces.
"Oh yeah, why not?" asks the captain.
"Jews sink Titanic."
"What? That's insane! Jews didn't sink the Titanic!" exclaims the captain, "It was an iceberg!"
"Iceberg, Goldberg, Greenberg, Rosenberg ...no mattah... all same."
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Black American invention

In 1888, a U.S. patent was issued for the railway signal to the Black American inventor, A.B. Blackburn (No. 376,362). The type of signal was that designed to be operated by the wheels of a train. A lever was depressed as a train wheel travelled over it, to remotely operate an alert through a mechanical linkage upon the passing of the train. It was designed for use upon a single track railway line for trains passing in one direction. To provide a signal for trains passing in the opposite direction, a similar apparatus would be applied on the opposite rail. This patent was an improvement in mechanical design of his earlier patent No. 309,517 on 23 Dec 1884, in which he also described how a gong was activated to provide the alert.«[Image: detail from patent diagram showinf device beside a section of rail.]
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