The area of any circle = pi*radius2
pi times radius squared. :)
Figure out its radius and multiply it by pi or 3.14.
If the figure is truly a circle, then the circumference is (Radius) x (2 pi) .
1.2 Area = pi X radius^2 So set Area = 4, and figure it out: 4 = pi X radius ^2 4/pi = radius^2
Area of a circle = pi*radius squared Circumference of a circle = 2*pi*radius or diameter*pi
pi times radius squared. :)
Figure out its radius and multiply it by pi or 3.14.
2 times pi times radius
They are:- 1 Circumference of a circle = pi*diameter or 2*pi*radius 2 Area of a circle = pi*radius squared 3 2*pi*radian = a complete rotation of a circle which is 360 degrees
When you try to figure out an area of a circle, you square the radius, then multiply it by pi to get the area of a circle. A radius square is radius x radius, or radius squared.
Pi times the radius of the circle squared = area And diameter is simply the radius x 2, since the radius is half the length of the circle.
If the figure is truly a circle, then the circumference is (Radius) x (2 pi) .
r = C /2 pi
1.2 Area = pi X radius^2 So set Area = 4, and figure it out: 4 = pi X radius ^2 4/pi = radius^2
Circumference = 2 x {pi} x radius = {pi} x diameter
Take "pi" times the diameter of the circle. Pi = 3.14159 (ALWAYS) If circle has a diameter of 10cm, circumference 31.41cm If circle has a radius of 2inches, the circumference is 12.57 inches. (radius = 2, diameter = 4)
Area of a circle = pi*radius2 Circumference of a circle = 2*pi*radius or diameter*pi Diameter of a circle = 2*radius