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What is the diameter of a circle if it's circumference is 4 and a half inches?
Divide the circumference by the number pi, which is approximately 3.14.
How do you find the radius of a circle if you know the diameter?
If you know the diameter of a circle you simply divide the diameter by 2 to get the radius. This is because the diameter is twice the length of the radius. For example, if the diameter is 10 divide by two which will give you the answer of 5 for the radius. Half it because: diameter/2 = radiusTo answer your question you must have a certin diameter. You must go 2pie times your diameterThe perimeter of a circle is called the circumference. The circumference is the distance around the circle.The circumference, C, of a circle is given by the formulawhere r is the radius of the circleA radius is half the diameter
How do you work out the perimeter of a semi circle?
Measure the diameter of the circle,this is a line taken right across the circle that goes through the centre. Now multiply by pi =3.142 and divide by 2 to get the length of half the circumference.
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.
What is the ratio of a circle's circumference called?
The ratio of a circle's circumference to its area is called the reciprocal of half the radius. The ratio of the circumference to its radius is called two times pi.
How do you find circumferince of half a circle?
You calculate the circumference of an entire circle, then divide by 2.
How to find the radius of a circle with the circumference?
Divide circumference by pi, that gives diameter. Radius is half of diameter
What is the diameter of a circle if it's circumference is 4 and a half inches?
Divide the circumference by the number pi, which is approximately 3.14.
How do you find area of a circle when you have the circumference circle?
Divide the circumference by pi, and that will give you the diameter. Then take half of the diameter (the radius), and plug it into the formula for the area of a circle (A=πr²)
How do you calculate the radius from the circumference?
Of a circle: divide the length of the circumference by the value of Pi (about 3.14159). The answer is the diameter. Half of the diameter is the radius
What is the approximate distance around the half circle with a diameter of 64 meters?
The circumference (full circle) is the diameter multiplied by pi. For the "half-circle", you would have to divide that by 2.
'How do you find the radius of a circle?
If you have the circumference- You have to divide the circumference by 2*Pi If you know the diameter the radius is simply half the diameter. If you know the area of a circle, the radius can be found using the formula : R = √A/π where: A is the area of the circle and π is Pi, approximately 3.142.
How do you find the radius of a circle if you know the circumference?
Given the circumference, divide the circumference by pi (3.1416) to give the diameter of the circle, then divide by 2 to find the radius (half of the diameter).Since C = (pi) D and D = 2r, then r = C/2piSee related links for more help with circles.
What is the half of circumference?
It is a semi circle
What is the radius of a circumference circle?
radius is half the diameter of a circle.
What is the circumference of a 6 diameter circle halfway?
A circle with a diameter of 6 has a circumference of 18.85. Half of that is 9.425
What is the circumference of a 10 and a half inch circle?
The circumference of a 10 and a half inch circle is about 33 inches (32.99). (C = d x Pi)
