circumference of a circle = 2*pi*radius or diameter*pi
The cricle's circumference is a linear function of its radius, so they change in direct proportion.If the radius increases by 75%, the circumference also increases by 75%.
You can use the circumference of the pencil and the circumference formula to find the radius. Set the measured circumference equal to 2pi*radius and solve. I measured it to about .75 of an inch, so: .75=2pi*radius r=.75/2pi
11.93662073 inches
Circumference = 2*pi*r Circumference = 2 *pi*12 mm 75 mm =====
75 rounded
Circumference of a circle = 2*pi*radius or diameter*pi
The circumference of a circle is C = 2πr, where C is circumference, π is pi (3.14), and r is radius. C = 2 x 3.14 x 12cm = 75cm = 75/1 cm
The circumference of a circle with a 10 millimeter diameter is about 31.42 mm
Circumference = 2*pi*radius Radius = Circumference/(2*pi)
The radius is 1/2 of the circumference.
the circumference is two times the radius, or 2r. so if the radius was 3, the circumference would be 6. if the radius was 4, the circumference is 8.
Circumference = 32.2/75 x 360 ie 154.56 in. Radius is therefore half of that, divided by pi, ie 24.6 in