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2020-07- 1 1

This is a simple arithmetic problem. That is, according to π=3. 14, multiply by the corresponding value. Extended data:

π is the origin: π is the16th Greek letter, which has nothing to do with pi. William Jones (1675- 1749, British mathematician) used π to represent the circle for the first time in his book Introduction to Latest Mathematics published in 1706. But it was the Swiss mathematician Leonard Euler who made π spread all over the world. From 1736, he expressed pi in letters and papers, to 1748, and in his book Introduction to Infinite Analysis, he expressed pi as the ratio of circumference to diameter of a circle. Because he is a great mathematician, people have followed the example of using pi to express pi, and pi has been widely used since then. Baidu encyclopedia-full text of pi

1 1

290 14

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20 18- 1 1- 1 1

1π=3. 14,2π=6.28,3π=9.42,4π= 12.56,5π= 15.7,6π= 18.84,7π=2 1.98,8π=25. 12,9π=28.26, 10π=3 1.4 1 1π=35.45, 12π=37.68, 13π=40.83, 14π=43.96, 15π=47. 1, 16π=50.24, 17π=53.38, 18π=56.52, 19π=59.66,20π=62.82 1π=65.94,22π=69.08,23π=72.22,24π=75.36,25π=78.5,26π=8 1.64,27π=84.78, 28π=87.92,29π=9 1.06, 30π=94.23 1π=97.34,32π= 100.48,33π= 103.62,34π= 106.76,35π= 109.9, 36π= 1 13.04,37π= 1 16. 18, 38π= 1 19.32,39π= 122.46, 40π= 125.64 1π= 128.74,42π= 13 1.88,43π= 135.02,44π= 138. 16, 45π= 14 1.3, 46π= 144.44,47π= 147.58,48π= 150.72,49π= 153.86,50π= 1575 1π= 160. 14,52π= 163.28, 53π= 166.42,54π= 169.56,55π= 172.7,56π= 175.84,57π= 172.98,58π= 182. 12,59π= 185.26, 60π= 188.46 1π= 19 1.54,62π= 194.68,