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113 ÷ 355 is easy to remember: 11 33 55
The value of <big><math>\pi</math></big> is approximately 3.14159 in decimal. This value is precise enough for almost all ordinary purposes; it can, for example, be used to calculate the circumference of the Earth with an error of only 350 feet.
The value of <big><math>\pi</math></big> is approximately 3.14159 in decimal. This value is precise enough for almost all ordinary purposes; it can, for example, be used to calculate the circumference of the Earth with an error of only 350 feet.
For rough purposes, the fraction 22/7 (= 3.14285...) is sometimes used. 355/113 is accurate to six places.
For rough purposes, the fraction 22/7 (= 3.14285...) is sometimes used. 113 ÷ 355 (= 3.14159292) is accurate to six places.
In hexadecimal (base-16) notation, <big><math>\pi</math></big> is approximately 3.243f.
In hexadecimal (base-16) notation, <big><math>\pi</math></big> is approximately 3.243f.