pi: The mathematical constant π, pronounced as "pi," is the ratio of the circumference of a circle to its diameter. It is an irrational number, approximately equal to 3.14159, and commonly used in mathematical formulas.
radical: In mathematics, a radical, also known as a root, is a symbol (√) used to represent the principal square root of a number or a higher root of a number. It can also refer to a radical sign (√), which is used to indicate the presence of a root.
radicand: In a radical expression, the radicand is the number or expression inside the radical symbol (√). It is the quantity for which the root is calculated. For example, in √25, 25 is the radicand.
Define: pi
Define: radical
Define: radicand
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