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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Exciting Period

A kindergarten class had a homework assignment to find out about something exciting and relate it to the class the next day. When the time came to present what they'd found, the first little boy walked up to the front of the class made a small white dot on the blackboard and sat back down. Puzzled, the teacher asked him just what it was.
"It's a period,'' said the little boy.
"Well, I can see that,'' she said, ''but what is so exciting about a period?''
''Damned if I know,'' said the little boy, ''but this morning my sister was missing one, Daddy had a heart attack, Mommy fainted, and the man next door shot himself."

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Triton

In 1989, the U.S. space probe Voyager 2 fired its thrusters to bring it closer to Neptune's mysterious moon Triton. This later photograph (left) shows a false-color image of Triton, taken two days before closest approach. At 2,700 km diameter, Triton is Neptune's largest satellite. The smallest features resolvable in this image are about 47 km across. The image is a composite of three images taken through ultraviolet, green, and violet filters.
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