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is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number π appears in many...

In aeronautics, the aspect ratio of a wing is the ratio of its span to its mean chord. It is equal to the square of the wingspan divided by the wing area...

through the poles, the circumference is 40,007.863 km (24,859.734 mi). Measurement of Earth's circumference has been important to navigation since ancient...

{\displaystyle a:d=1:{\sqrt {2}}.} Another example is the ratio of a circle's circumference to its diameter, which is called π, and is not just an irrational...

the ratio of the circumference of a circle to its diameter. The bill, written by a physician and an amateur mathematician, never became law due to the...

141592653589793 ... Pi is defined as the ratio of a circle's circumference C {\displaystyle C} to its diameter d : {\displaystyle d:} π = C d . {\displaystyle...

tire will also increase its circumference, because the sidewall height is a proportional dimension. Increasing the aspect ratio will increase the height...

Greek letter π represents the constant ratio of the circumference of any circle to its diameter, approximately equal to 3.14159. One method of deriving this...

to determine the distance the car will travel for one revolution of the engine by dividing the circumference of the tire by the combined gear ratio of...

wing or airplane, as compared with an ideal wing having the same aspect ratio and an elliptical lift distribution. The Oswald efficiency is defined for...

approximations for its perimeter (also known as circumference), for which integration is required to obtain an exact solution. Analytically, the equation...

United States a waist circumference of >102 cm (≈40") in men and >88 cm (≈34.5") in women or the waist–hip ratio (the circumference of the waist divided...

The ratio of a circle's circumference to its diameter is π (pi), an irrational constant approximately equal to 3.141592654. Thus the circumference C is...

length and circumference when flaccid and erect. Besides the natural variability of human penises in general, there are factors that lead to minor variations...

combined with the wheel diameter determines how far the bicycle advances per pedal or crank revolution. Typical gear ratios on bicycles range from very...

intercepted within the earth's shadow of the circumference of the circle in which the extremities of the diameter of the circle dividing the dark and the bright...

of the symbol π (the Greek letter Pi) to represent the ratio of the circumference of a circle to its diameter. He was a close friend of Sir Isaac Newton...

example, the constant π may be defined as the ratio of the length of a circle's circumference to its diameter. The following list includes a decimal expansion...

irrational numbers are the ratio π of a circle's circumference to its diameter, Euler's number e, the golden ratio φ, and the square root of two. In fact, all...

having a diameter equal to 1/4 of the flag width, is a sign in the form of flame of fire over the two wavy lines. The sign and the circumference are scarlet...