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D=diameter... P=Pi(3.14159265)
pi x D
'Pi' is a number that can never be written exactly ... which is why a symbol is used instead. Its value is known to several thousand decimal places, which is more than anybody will ever need for any practical purpose.
If you use [22/7] for 'pi', your answer is correct within 0.04 percent, which is pretty good.
If you want the answer correct within one part in a million, use [3.14159] for 'pi'.
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How do you find the cicumference of a circle?
pi=3.14 it is really long # but we shorten is to 3.14. 3.14 times the diameter
What is cicumference in math?
A circumference is the distance around a circle. To find a circle's circumference you need to follow the formula: d*pi The d stands for diameter and pi is 3.14. You need to mulitply the length of the diameter by pi for the circumference. Or, if the diameter isn't given, multiply the radius by 2 and then multiply that by pi.
How do you find a radius using the diameter?
Divide the Diameter by 2 to get the Radius
How do you find diameter of circle using the circumference?
Diameter = circumference/pi
How do you change square feet into a diameter of a cicle?
To find the diameter of a circle given the area. The area of a circle = pi x the radius squared. To find the radius, then the diameter transpose the area formula, so A = Π * r^2 A/ Π = r^2 √A/ Π= r 2 x √A/ Π = d A = area Π = pi = 3.142 r = radius d = diameter
