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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A little hard of hearing!
A 92 year-old man went to the Doctor to get a physical. A few days later the Dr. saw the man walking down the street with a gorgeous young lady on his arm.
A couple of days later the Dr. talked to the man and said, "You're really doing great, aren't you?"
The man replied, "Just doing what you said Doctor, 'Get a hot mamma and be cheerful."
The Doctor said, "I didn't say that. I said you got a heart murmur. Be careful."