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Approximation for pi?
3.142 rounded to 3 decimal places
When finding area of circle in millimeters is Pi still 3.14?
3.14 is always the best 3 digit approximation of pi.
How do you explain pi in geometry?
By definition, pi is the ratio of the circumference of a circle to its diameter. Pi is always the same number, no matter which circle you use to compute it. For the sake of usefulness people often need to approximate pi. For many purposes you can use 3.14159, which is really pretty good, but if you want a better approximation you can use a computer to get it. Here's pi to many more digits: 3.14159265358979323846. The area of a circle is pi times the square of the length of the radius, or "pi r squared": A = pi*r^2
When Circumference is 60 inches - what is diameter?
In order to find the diameter of a circle, you have to take the circumference of the circle and divide by Pi for which you can use the approximation: 3.14. So if the circumference of the circle is 60 inches, you divide that by Pi (3.14) and get a diameter of 19.0985 inches.
What is the area of a circle that has a radius of 3 miles?
Area of a circle formula: pi*radius^2 (pi multipled by (radius squared)) Pi is a number with an infinite number of decimal places, it is on most good calculators (the symbol looks a bit like a bridge, or something from Stone Henge). If you can't find the function for pi on your calculator, use the approximation pi=3.14159. So, Area=3.14159 multiplied by 3^2.
