Find the area of the shaded region
[3167] Find the area of the shaded region - Find the area of the shaded region accurate up to 3 decimal places. (A=?, a=2389, b=1389) - #brainteasers #math #riddles - Correct Answers: 23 - The first user who solved this task is Sanja Šabović
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Find the area of the shaded region

Find the area of the shaded region accurate up to 3 decimal places. (A=?, a=2389, b=1389)
Correct answers: 23
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
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Pray Before Eating

Everyone was seated around the table as the food was being served. When little Logan received his plate, he started eating right away.
"Logan, wait until we say our prayer," his mother reminded him.
"I don't have to," the little boy replied.
"Of course you do," his mother insisted, "we say a prayer before eating at our house."
"That's at our house," Logan explained, "but this is Grandma's house and she knows how to cook."

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François Hennébique

Born 25 Apr 1842; died 20 Mar 1921 at age 78.French engineer who was an important leader in experimenting with various ways of reinforcing concrete with iron and steel. At the Paris Exposition of 1867, Hennebique saw Joseph Monier's tubs and tanks built of concrete reinforced with wire mesh, and began experimenting with ways to apply this new material to building construction, setting up his own firm (1867). First using reinforced-concrete floor slabs (1879), he progressed to a complete building system, patented 1892, using his invention of a method using hooked connections on reinforcing bars. Hennébique introduced his techniques into Britain when he was commissioned to build a new flour mill in Swansea (completed 1898). This was the first multistorey reinforced concrete building in Britain.
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