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How do you determine the circumference of a circle if you know the radius?
Wiki User
∙ 2011-10-21 19:03:25
use the formula pi*diameter = circumference
and the formula diameter = 2*radius
and combine them 2pi*radius = circumference
now you have a formula that you can just plug you numbers into.
if you have 3 as your radius, then this is how to find the circumference
2pi*3=circumference
6.28*3=circumference
18.84=circumference
Wiki User
∙ 2011-10-21 19:03:25
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What is the circumference of a circle with a radius of Cm?
The circumference is twice the radius. In other words, if you know the radius, multiply it by 2 to get the circumference.
What is the radius of circle c?
Conceptually, the radius is the distance from the center of the circle to any point on its edge. If you know the circumference of the circle, then the radius is the circumference divided by 2 times pi.
How do you find the area of a circle if you only know its circumference?
Divide its circumference by 2*pi which will give the radius of the circle. Area of the circle then is pi*radius squared
How do you find the radius of a circle if you know the circumferance?
radius = circumference/2*pi
How do you find the length of of the radius of a circle?
You can either measure it, or calculate it if you know the diameter (radius = diameter / 2), or the circumference (radius = circumference / (2pi)).
What is the circumference of a circle with a radius of Cm?
The circumference is twice the radius. In other words, if you know the radius, multiply it by 2 to get the circumference.
How dou find diameter?
You measure it. If you know the radius (of a circle), you multiply it by 2 to get the diameter. If you know the circumference of a circle, you divide by pi to get the diameter.You measure it. If you know the radius (of a circle), you multiply it by 2 to get the diameter. If you know the circumference of a circle, you divide by pi to get the diameter.You measure it. If you know the radius (of a circle), you multiply it by 2 to get the diameter. If you know the circumference of a circle, you divide by pi to get the diameter.You measure it. If you know the radius (of a circle), you multiply it by 2 to get the diameter. If you know the circumference of a circle, you divide by pi to get the diameter.
What is the radius of a circle if given the circumfrence?
The circumference (c) of a circle = 2πr (where r = radius). Therefore if you know the circumference, the radius (r) = c/2π.
When you know the circumference of a circle how do you find the diameter?
If you know the circumference of a circle, you can find the radius by dividing the circumference by the value of Pi (3.14159...)
What is the radius of circle c?
Conceptually, the radius is the distance from the center of the circle to any point on its edge. If you know the circumference of the circle, then the radius is the circumference divided by 2 times pi.
The radius of the circle is 5inches what is the circumference?
The circumference of a circle that has a radius of 5 inches is 10 X pi or approximatly 31.415926535897932384626433832795. If you know the radius you can find the circumference by multiplying it by 2(pi)
What is the circumference of a circle with a radius of 12.5?
36.5 and do you know the answer
How do you find the circumference if you know radius?
Circumference of a circle = 2*pi*radius
How do you find the area of a circle if you only know its circumference?
Divide its circumference by 2*pi which will give the radius of the circle. Area of the circle then is pi*radius squared
How do you find the radius of a circle if you know the circumfrence?
radius = circumference/(2*pi)
How do you find the radius of a circle if you know the circumferance?
radius = circumference/2*pi
What is the formula for finding the circumference of a circle when you only know the radius?
Circumference = 2 x pi x radius
