Find the area of the shaded figure
[348] Find the area of the shaded figure - Express result to the accuracy of 3 decimal. - #brainteasers #math - Correct Answers: 60 - 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 3 decimal.
Correct answers: 60
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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Brenda, pregnant with her firs...

Brenda, pregnant with her first child, was paying a visit to her obstetrician's office. When the exam was over, she shyly began, "My husband wants me to ask you..."
"I know, I know," the doctor said, placing a reassuring hand on her shoulder, "I get asked this all the time. Sex is fine until late in the pregnancy."
"No, that's not it at all," Brenda confessed. "He wants to know if I can still mow the lawn."
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Simon Lake submarine patent

In 1896, inventor Simon Lake was issued a U.S. patent for his "Submarine Locomotive" (No. 557,835), which he designed with underwater salvage operations in mind. It was fitted with traction wheels to travel the water-bed, and a crane hoist at the front. A diver's compartment with a bottom door could be filled with compressed air at the same pressure as the surrounding water to enable the diver to exit and enter the vessel underwater to have "an aperture on one side closed by means of a vibratory disphragm, and a combined air-supply and speakingtube connecting ... with a diver's helmet." He improved his design with a later patent issued 20 Apr 1897 (No. 581,213). On 16 Dec 1897 he demonstrated submarine Argonaut.«
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