# What Does “pi R Squared” Mean?

The math formula for finding the area of a circle is “pi r squared.” This is what “pi r squared” means. Most of the time, the equation looks like “pi * r2″ or ” * r2.”

To figure out the area of a circle, you must first find its radius, which is half the length of a straight line that goes through the circle’s centre. r = C / 2 is the formula used to figure out the circle’s radius.

Pi is a mathematical constant that is about equal to 3.14. It is the ratio of the diameter to the circumference of a circle. Since the 1800s, the Greek letter “” has also been used to stand for pi.

To find the area of a circle, you use the following formula:

A = pi * r2 or

A = Π * r * r

Where A is the area, r is the radius, and 3.14 is the value of pi.

For example, here’s how to figure out the area of a circle with a diameter of 2 inches:

A = 3.14 * (2/2)2

A = 3.14 * 12

A = 3.14

In this case, 3.14 inches is the area of the circle.

Most of the time, the mathematical constant pi is used to figure out the area and volume of geometric shapes. This can be used to figure out things like floor space and how much liquid a barrel can hold. Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.