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.
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All of his life Len from Cape...
All of his life Len from Cape Breton had heard stories of an amazing family tradition. It seems that his father, grandfather and great-grandfather had all been able to walk on water on their 21st birthday. On that day, they'd walk across the lake to the boat club for their first legal drink.
So when Len's 21st birthday came around, he and his pal Corky took a boat out to the middle of the lake. Len stepped out of the boat and nearly drowned!
Corky just managed to pull him to safety. Furious and confused, Len went to see his grandmother. "Grandma, it's my 21st birthday, so why can't I walk across the lake, like my father, his father, and his father before him?"
Granny looked Len straight in the eyes, and said, "Because, you idiot, your father, grandfather and great grandfather was born in January, you were born in July."
So when Len's 21st birthday came around, he and his pal Corky took a boat out to the middle of the lake. Len stepped out of the boat and nearly drowned!
Corky just managed to pull him to safety. Furious and confused, Len went to see his grandmother. "Grandma, it's my 21st birthday, so why can't I walk across the lake, like my father, his father, and his father before him?"
Granny looked Len straight in the eyes, and said, "Because, you idiot, your father, grandfather and great grandfather was born in January, you were born in July."