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In math why does pi represent 3.14?
Pi does not represent 3.14. Pi represents the ratio of the circumference of a circle to its diameter. Pi is an irrational number. 3.14 is but the crudest approximation of pi. A better approximation is 3.1416. Still better is 3.14159. The closest approximation commonly used in real-world applilcations is 3.14159262. If anything, 3.14 represents pi, and represents it very imprecisely. As for why the term "pi" was chosen to represent this important concept in mathematics, it was chosen because it is the initial letter of the greek word for "perimeter".
What expression represents the volume of a cylinder whose height is equivalent to the length of the radius?
The volume of a cylinder is PI * R2 * H If H is the same as R, then it is PI * R3 (Or PI * H3)
What Greek symbol represents the change in quantity?
The symbol is called DELTA and looks like a triangle. -----> Δ <----
A symbol usually a letter that represents one or more numbers?
It is a variable
What symbol represents energy in an equation?
I don't think there is one but I'm not sure. I don't think you show energy on a symbol equation.
