Because the circumference is equal to the diameter multiplied by pi or the radius multiplied by 2*pi.
24.492, unless you want more digits of pi besides the standard 3.14. The circumference of a circle is equal to the diameter multiplied by pi, or the radius multiplied by two, then multiplied by pi. c = d*pi c = 2*r*pi c = circumference d = diameter r = radius pi = 3.141593
If you mean the diameter and radius of a circle given the circumference it is:- diameter = circumference/pi radius = circumference/(2*pi)
radius = diameter/2 radius = circumference/2*pi
PI or 3.14 multiplied by Diameter or Radius x 2 12.56 approximately
Circumference = Diameter multiplied by Pi Diameter = Circumference divided by pi Radius = Diameter divided by 2.
2*radius*pi or diameter*pi, pi = 3.14 (rounded to the nearest tenth)
Because the circumference is equal to the diameter multiplied by pi or the radius multiplied by 2*pi.
24.492, unless you want more digits of pi besides the standard 3.14. The circumference of a circle is equal to the diameter multiplied by pi, or the radius multiplied by two, then multiplied by pi. c = d*pi c = 2*r*pi c = circumference d = diameter r = radius pi = 3.141593
Formula for area: A = Pi*R² (Pi = 3,1416 and R² is the radius multiplied by itself) Formula for circumference: C + Pi*D (D is diameter) Formula for Diameter: D = 2*R (radius multiplied by 2))
You multipy the diameter, which is hte radius multiplied by two. The radius is hte length of the circle from the middle most point to the outer rim.
diameter ------------- Diameter. The R (radius) of a circle multiplied by two equals the diameter.
radius = diameter/2 circumference = 2*pi*radius or pi*diameter area = pi*radius2
The equation for the circumference of a circle is 2 multiplied by 3.14 (pi) multiplied by the radius. Since the radius is half of the diameter, it can also be calculated by multiplying the diameter by 3.14.
If you mean the diameter and radius of a circle given the circumference it is:- diameter = circumference/pi radius = circumference/(2*pi)
radius = diameter/2 radius = circumference/2*pi
divide dy pi. the rule is diiameter (or 2 radius) multiplied by pi equals circumference so: 2 pi x radius= circ and, since diameter is 2 times the radius, pi x D= circ