Calculate pi in excel1/6/2023 ![]() Here, it is interpreted as the radius to the power of 2, i.e., radius 2. Note: The caret (^) symbol is used to represent the power of a number in mathematics. Next, we will use the formula =PI()*C2^2, which will give the area of the circle as 176.71 m 2 Therefore, the radius in cell C2 will be =C3/2. This situation is illustrated below:įirst, we find the circle's radius, which is half the diameter. The formula to calculate the area of the circle is π x radius 2. Let's say you need to calculate the circle's area with a diameter of 15 m. For example, our formula becomes =ROUND(C3*PI(),2) to give the result as 47.12 m. Note: If the result obtained has many digits after the decimal point, you can use the ROUND function and limit the decimals to 2 digits. Next, you need to do simple multiplication using the formula C2 x C3 in cell C4 to get the circle's circumference as 47.12389 m.Īnother method to calculate the circumference is to input the PI function in the calculations directly.įor example, we will use the formula =C3*PI() in cell C4, giving us the same result as the alternate method. But, first, we will use the function =PI() in cell C2 so that we will get the result: Let's say we reference the value of π from cell C2. You can either reference the value of π from another cell or directly input it into the formula. ![]() To calculate the circle's circumference, you will use the formula π x diameter or 2 x π x radius. Then, the data in Excel looks as illustrated below: You can use the function while calculating the:Īssume that you need to find the circumference of a circle with a diameter of 15 m. There are different instances where you can use this function in Excel. ![]() ![]() You might notice that once the upper limit of 14 digits is crossed, Excel returns zero for all the decimal increases. This will open up the Format cell dialog box where you can set the number of decimal places according to the required result's precision. You can either resize the cell's width or increase decimal points using the keyboard shortcut of Alt + H + 0 to improve the precision of the value.Īlternatively, you can also select the cell and press Ctrl +1. So if you use the formula =PI() in Excel, the result that will be displayed in the spreadsheet will be:Įven though the function returns 14 digits after the decimal point, you can see that only six digits are represented in our spreadsheet. Where you don't need to add any additional arguments, you begin with the equal sign(=), followed by the function name, and end the formula with parenthesis or the round brackets. Here's a great article on how NASA uses the value of Pi in its space adventures. The best Excel does maintain accuracy up to the first 15 digits in various real-life calculations, such as for buildings and other architectural structures, quantum physics, medical procedures, and the trajectory of an aircraft in space. The human brain can't remember all the digits, and a computer can't store them all either, since there are infinite digits. If you're curious, you can see the first 100,000 here. It is categorized as a Math & Trigonometric function that returns the dimensionless value of the mathematical constant, π, equalling 3.14159265358979 (it is accurate up to 15 digits).īeing an irrational number, Pi has indefinite recurring digits after the decimal. Since circumference and diameter/radius are used in the same unit, π is just a number that does not carry any dimensions. We are aware that the formula for calculation of the circumference of the circle is:īy rearranging the formula, we get the value of π as:įrom the calculations, we can deduce that π is the circle's circumference ratio to its diameter. ![]() So suppose that if the circle's diameter is 10 cm and its circumference is 31.4 cm, what is the value of π? The first time you are introduced to the concept of π in school is when you are expected to calculate the circumference of a circle using the value of Pi(π) and the diameter. Pi is one of the most well-known mathematical constants that has puzzled mathematicians for almost 4000 years. The Pi(π) function in Excel returns the mathematical constant pi value, which is equal to 3.14159265358979. ![]()
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