The phrase "pi r squared" refers to the mathematical formula used to determine the area of a circle. Normally, the equation is written as "pi * r^{2}," or "Π * r^{2}.
Continue ReadingTo calculate the area of a circle, it is necessary to first determine the circle's radius, which is half the distance of a straight line across the center of the circle. The formula used to determine the circle's radius is r = C / 2.
Pi is a mathematical constant representing the ratio of the circumference of a circle to its diameter, and is approximately equal to 3.14. Pi has also been represented by the Greek letter "Π" since the 18th century.
The formula used to determine the area of a circle is:
A = pi * r^{2} or
A = Π * r * r
Where A represents the area, r is the radius, and pi equals 3.14.
For example, the area of a circle with a diameter of 2 inches can be calculated as follows:
A = 3.14 * (2/2)^{2}
A = 3.14 * 1^{2}
A = 3.14
In this case, the area of the circle is 3.14 inches.
The mathematical constant pi is commonly used to determine the of area and volume of geometric shapes, which can be applied to things like floor space and how much fluid a particular barrel holds in everyday life.
Learn more about CalculusThe mean absolute deviation formula is Σ|x - μ| / N. The symbol Σ is used to denote the sum of a series of numbers, while μ represents the mean, x represents each value and N represents the total number of values. The formula takes the absolute value of the difference between a value and the mean and divides it by the number of values.
Full Answer >The multivariable chain rule is a formula in calculus used to find the derivative of the composition of multiple functions. In the multivariable chain rule, a function expressed as y(w(x)) can be differentiated using the equation dy/dx = (dy/dw)*(dw/dx), where d indicates the derivative of the variable.
Full Answer >A math extrapolate formula is an equation used to predict the value of the dependent variable from an independent variable not found within the range of data. An example of such a formula is y=2x+5, when the range of values for x is normally between 0 and 10. If the value of x is 20, it can still be plugged into the equation to find that y=2(20)+5=45.
Full Answer >The formula for the area of a circle is pi multiplied by the radius of the circle squared. The radius of the circle is the length of a straight line stretching from the center of the circle to the line of circumference. It is equal to half the diameter.
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