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How do you find radius when all they give you is circumference?
Wiki User
∙ 13y ago
Divide the circumference by the constant called 'Pi'. Pie is roughly equal to 3.14159.
Wiki User
∙ 13y ago
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Is circumference larger than radius?
Yes it is. Circumference is the whole area of the circle. Radius is from the middle to the side of the circle. Yes it is. The radius it half way across the circle from the center, while the circumference is all the way around the circle. The diameter is all the way across the circle, while being twice the radius. The circumference is about 3.14 times the diameter (or Pi if you prefer).
Why is half the diameter the radius?
A radius is a straight line from the circumference (boundary) of a circle to the centre. A diameter is a straight line that goes from the circumference to the centre and then continues until it reaches the circumference of the other side. In a circle, all points on the circumference are the same distance from the centre. As a result, the second part of the diameter is the same as the first. In other words, diameter = radius + radius = 2*radius.
How do you find the circumference of a circle from the radius?
Square the radius and multiply the result by 3.14. You may want additional digits of pi for greater precision, but that's the basic idea.The formula is πr² (that's "pi r squared," if the character doesn't show up properly).ANSWER:The above answer is wrong! The above gives the area of a circle, not the circumference. Besides pie are round, cornbread are square. Pi = 3.1416 as stated above.The circumference of a circle is 2 times the radius times pi .This is because pi for all circles is the circumference divided by the diameter. So, pi times the diameter equals the circumference. The diameter is twice the radius.
Is the formula pie times diameter of circumference?
First of all it is NOT 'pie', that is the meat pie or apple pie that you eat. The circular 'pi' is 'pi' (small/lower case) . 'pi' is the Classical Greek letter for lower case 'p', and means 'constant of **P**roportion'. To find the circumference of a circle the equation is C = pi d Circumference equals 'pi' X the diameter. or C = 2 pi r Circumference equals 'pi' X '2' X the radius.
How do you easily find the circumference of a circle?
d=diameterr= radiusc=circumference___________________________Radius is half of Diameter, therefore you would multiply Diameter by Pi._____________________________You can also find the circumference by doing radius times 2 times Pi. So the formula for circumference is r*2*pi or radius times 2 times Pi-richlee2000_____________________________The proper answer, to all those who see this is as follows:2rπr = radiusπ = I hope your joking... But 3.14or pi.----------------------Circumference of a circle is simply pi times the diameter, or 2pi times the radius. Proving this requires some introductory calculus though.______________________________pi times the diameter. That's it, that's the circumference. If you only have the radius, you need to GET the diameter by multiplying the radius by 2. Hence 2rpi2xr = diameterdiamater x pi = circumference2rpiif the object is a circle or sphere, the cirsunmference is pi (3.1415927) multiplied by the diameter(distance across circle through center point) voila!
The radius is about what to the circumference?
The radius is the circumference divided by pie, all divided by two. :)
How do you find circumference if you have radius?
First of all, let's define circumference. Circumference is the diameter of a circle times pi (3.14) So it would take 3.14 diameters to go around the circumference of a circle. A radius is from the center of a circle to the outside. It is half the length of the diameter. So, take the radius and double it. That will give you the diameter. Take the diameter and multiply it by pi. Pi is the button on your scientific calculator that looks like Stonehenge. If you do not have a pi button, 3.14 will give you a rough estimate.
What is the circumference of a circle that has a radius of 6.74 in?
The circumference of a circle with a radius of 6.74 inches is approximately 42.34 inches. The circumference of a circle is found using the circumference formula: Circumference = 2 * π * radius So, all you have to do is plug in the radius into the formula, and approximate π to be 3.14159.
How does the circumference compare to the radius of the circle?
Well the radius is only half of the line on the circle the circumference is all around
Can you give me a written answer of finding the radius circumference area if the diamter is 3.14 of a circles?
Yes, we could certainly give you a complete, dynamite, bullet-proof, air-tight solution to the whole set of questions, so good that all you'd have to do would be to print it out and hand it in. But that would be cruel ... it would deprive you of the thrill of working it out on your own, plus it would prevent you from learning anything. Better than that, we'll give you the formulas, and you can plug in the numbers and find the answers yourself. You have the diameter. It's 3.14. -- You have to find the radius. The radius is 1/2 of the diameter. -- You have to find the circumference. The circumference is (pi) times the diameter. (pi) is 3.14 . -- You have to find the area. The area is (pi) times (the radius)2. That means "pi times the radius squared", and that means (pi) times (the radius) times (the radius). (pi) is 3.14 . There it is. That's everything you need. Go to it, champ!
How do you find the circumference when you have area?
if your talking about a circle, then: Area = pi*radius^2, so you can use the area to find the radius, and then all you need to do is use the formula Circumference = 2*pi*r If its a different shape it gets slightly more tricky
What is the relationship between the Radius to the circumference?
The circumference is ALL the way around the circle, while the radius is only HALF way into the middle of the circle. I'm guessing you meant "What is the relationship between the radius of a circle and its circumference?" Radius is half of the diameter of a circle, circumference is PI times diameter; therefore, the circumference is PI times two times radius.
How do you find the radius of a circle if all you know is the circumference?
C = circumference r = radius C = 2 x pi x r C / 2 = pi x r C / 2 / pi = r
How do you find the radius if you do not know the diameter?
You can measure it. Otherwise, you certainly have to know SOMETHING about the circle to calculate the radius, usually the diameter, the circumference, or the area. If you don't know anything at all about a circle, you can't find out the radius, either.
What is the formula for the radius of a circle when you have the circumference?
well the circumference is equal to pi times the diameter, so all that you have to do is divide the circumference by pi to get the diameter. Then you divide the diameter by two to get the radius.
Is circumference larger than radius?
Yes it is. Circumference is the whole area of the circle. Radius is from the middle to the side of the circle. Yes it is. The radius it half way across the circle from the center, while the circumference is all the way around the circle. The diameter is all the way across the circle, while being twice the radius. The circumference is about 3.14 times the diameter (or Pi if you prefer).
How do you find the are of a circle with only the circumference?
It's important to know the formulas for all these characteristics of circles, and to recognize what they have in common. Area of a circle = πr2 Circumference of a circle = 2πr or dπ Where in the above equations r represents radius, and d is diameter (2r). Both these equations have r in them. Find the radius using the circumference equation, and then plug it into the equation for Area
