Find the area of the purple shaded region
Find the area of the purple shaded region. Express result to the accuracy of 3 decimal.Correct answers: 45
The first user who solved this task is Sanja Šabović.
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Radio paging serviceIn 1950, the first American radio paging service, Aircall of New York City, sent the first page to a doctor who was on a golf course 25 miles away. Subscribers carried a six-ounce pocket radio receiver and could hear their call numbers repeated in numerical sequence on the air at least once per minute within a 30-mile radius. |