Find the area of the shaded ...
[3087] Find the area of the shaded ... - Find the area of the shaded octagon (A=?, a=1999) and express result to the accuracy of 3 decimal. - #brainteasers #math #riddles - Correct Answers: 22 - The first user who solved this task is Allen Wager
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Find the area of the shaded ...

Find the area of the shaded octagon (A=?, a=1999) and express result to the accuracy of 3 decimal.
Correct answers: 22
The first user who solved this task is Allen Wager.
#brainteasers #math #riddles
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Signs of the times

In the front yard of a funeral home, 'Drive carefully, we'll wait.'

On an electrician's truck, 'Let us remove your shorts.'

Outside a radiator repair shop, 'Best place in town to take a leak.'

On a maternity room door, 'Push, Push, Push.'

On a taxidermist's window, 'We really know our stuff.'

On a butcher's window, 'Let me meat your needs.'

On a fence, 'Salesmen welcome. Dog food is expensive.'

On a muffler shop, 'No appointment necessary. We'll hear you coming.'

In a dry cleaner's emporium, 'Drop your pants here.'

On a desk in a reception room, 'We shoot every 3rd salesman, and the 2nd one just left.'

In a veterinarian's waiting room, 'Be back in 5 minutes. Sit! Stay!'

In a Beauty Shop, 'Dye now!'

In a restaurant window, 'Don't stand there and be hungry, come in and get fed up.'

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Augustus De Morgan

Died 18 Mar 1871 at age 64 (born 27 Jun 1806). English mathematician and logician who did important work in abstract symbolic logic, the theory of relations, and formulated De Morgan's laws: one is “NOT (A AND B) = (NOT A) or (NOT B)” and the other is “NOT (A OR B) = (NOT A) AND (NOT B)”. These laws continue to be applied in modern proof theory and for software programming. When he defined and introduced the term “mathematical induction” (1838), he gave the process a rigorous basis and clarity that it had previously lacked. He originated the use of the slash to represent fractions, as in 1/5 or 3/7. In Trigonometry and Double Algebra (1849) he gave a geometric interpretation of complex numbers.«[Born in India, De Morgan (according to Macfarlane) De Morgan considered himself to be British, without being specifically English, Scottish, Welsh or Irish.]
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