You multiply the radius by pi.
The equation for circumference is 2(3.14)(r) or 3.14(d) where r=radius and d=diameter. The radius of a circle is half of the circumference, or the distance across the interior of a circle.
Divide the circumference by 2*pi because 2*pi*radius = circumference
The circumference of a circle with a radius of 2.5 is approximately 15.7075. The equation for the circumference of a circle is Circumference = 2πr where r is the radius. In our case, the radius is 2.5. We can approximate π to be 3.1415. So C = 2 * 3.1415 * 2.5, or C ~= 15.7075
Formula for finding the circumference of a circle: 2 multiplied by pi multiplied by radius
If a circle has a circumference of 43.98 the radius is: 7 (6.999).
the equation for the circumference of a circle is 2*radius*pi, or since the radius is half of the diameter 2*radius=diameter, we can simplify the equation to the circumference of a circle=diameter*pi
The equation for circumference is C=2(pi)(r) where C is the circumference and r is the radius. You can find the radius by plugging in the circumference into this equation and solving the equation.
the equation for the circumference is Pi * double the radius which is 3.1416 * 15.5 * 2 The circumference of a circle with a radius of 15.5cm is 97.3cm.
The equation for circumference is 2(3.14)(r) or 3.14(d) where r=radius and d=diameter. The radius of a circle is half of the circumference, or the distance across the interior of a circle.
2*pi*radius = perimeter or circumference of a circle radius = circumference/2*pi
The equation for the circumference of a circle is pi times radius squared.
The equation for finding the circumference of a circle is diameter times pi so reverse it to circumference divided by pi which leaves the diameter. The diameter is twice as big as the radius so divide the diameter by 2 and you will find the radius.
2x3.142xr
To find the circumference of a circle, use the equation: Circumference = 2*π*radius so when the radius is r, the circumference is 2πr
Divide the circumference by 2*pi because 2*pi*radius = circumference
Circumference = 2 x pi x radius
The circumference of a circle is given by the equation C=2*pi*r (r being the circle's radius). So, the circumference you're looking for is 30.35 cm.