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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 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
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 find the circumference of a cicle?
To find circumference you must multiply twice the radius by π, or using the diameter, if it gives it to you, multiply that by π.
Find area of a cicle if the diameter is 8.4 cm.?
12.5 km
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
How do you find the radius if you dont know the diameter but you know the cicumference?
Dividing the circumference by 2*pi will give the value of the radius.
What is the formula to find a radius when given the cicumference?
circumference=pi * diameter radius= 1/2 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 the cicumference of a circle whichout knowing its area radius or diameter?
Given is a circle. Not known is its area A. Not known is its radius r. Not known is its diameter d. You want to calculate its circumference C. Impossible. It cannot be calculated. The only other way is to measure it with a tape measure.
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
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 find the diameter of a circle using pi?
Diameter = circle's circumference/pi
How do you find the circumference of a circle using only the diameter?
Pi x diameter
