Find the area of the black region
[2917] Find the area of the black region - Find the area of the black region accurate up to 3 decimal places. (A=?, a=20, b=10) - #brainteasers #math #riddles - Correct Answers: 39 - The first user who solved this task is Sanja Šabović
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Find the area of the black region

Find the area of the black region accurate up to 3 decimal places. (A=?, a=20, b=10)
Correct answers: 39
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
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Seeing A Child In Need

One afternoon a little boy was playing outdoors. He used his mother's broom as a horse and had a wonderful time until it was getting dark.
He left the broom on the back porch. His mother was cleaning up the kitchen when she realized that her broom was missing. She asked the little boy about the broom and he told her where it was.
She then asked him to please go get it. The little boy informed his mom that he was afraid of the dark and didn't want to go out to get the broom.
His mother smiled and said 'The Lord is out there too, don't be afraid'. The little boy opened the back door a little and said 'Lord if you're out there, hand me the broom'.
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Vladimir Kosma Zworykin

Died 29 Jul 1982 at age 92 (born 30 Jul 1889).Russian-American physicist and electronics engineer who is known as “the Father of Television.” Concurrent with the start of radio broadcasting, Zworykin was developing a system of transmitting sound and pictures. Other inventors were using a motorized, mechanical scanning system with rotating disks capable of a picture about one inch square. It was heavy, bulky and impractical for home use. Zworykin, at Westinghouse, instead developed an electronic scanning television system using his innovations, the iconoscope and kinescope, the forerunners of today's television camera. He also invented the electron microscope.
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