The circumference of a circle is 15\piπ m. Find its radius, in meters. The Answer Should Be 7.5
Circumference of circle: 2*pi*12 = 24*pi meters
circumference = 44 m radius = 44\2 (circumference\2) = 22m
find the radius of a circle with circumference of 42.1
Circumference of a circle = 2*pi*radius or pi*diameter Circumference = 21.67698931 or 21.7 meters to the nearest tenth
For a circle, circumference = 2 x pi x radius.
The process you would use to find the circumference of a circle completely depends on what information you already have about the circle. For example, you might be given the circle's area, or its radius, or its diameter, or the length of one radian of arc along the circumference, and each of those would require a different method to find the circumference. The easiest example is the one where you know the circle's diameter. In that case, simply multiply the diameter by (pi) to get the circumference. The next easiest case is the one where you have the circle's radius ... let's say the radius is 1.5 meters. Knowing that the radius is half of the diameter, you first double the radius, and find that the diameter 3.0 meters. Then you get the circumference just as you did in the first example ... multiply the diameter by (pi). With a radius of 1.5 meter, you would find that the circumference is about 9.425 meters. (rounded)
A circle with a radius of 8 inches has a circumference of 50.27 inches.
The formula to find the circumference is 2r x pi, 2(4)x3.14=25.12. The circumferencence of that circle is about 25.12 meters
Circumference of a circle = 2*pi*radius
The radius of a circle is the distance from its centre to its circumference. If a circle has a radius of r units then the length of its circumference is 2*pi*r units.
The formula to find the circumference of a circle is C = 2πr, where r is the radius of the circle. To find the circumference, you first need to find the radius by using the formula for the area of a circle (A = πr^2). Given that the area is 201.06, you can solve for the radius. Once you have the radius, you can plug it into the formula C = 2πr to find the circumference.