Tangent
Area of a circle = pi*radius squared
That's called a radius.
Assuming you know the radius - the formula is Pi x Radius2
because cicle sounds weird. r is used as an abbreviation for radius meaning half the diameter of the circle.
You must use the information that you do have about that cicle, along with theequations and formulas you've learned that give the relationship between thekind of information you have and the radius of cicles in general.
Tangent
Diameter. Half of the width is called the radius.
Area of a circle = pi*radius squared
That's called a radius.
Assuming you know the radius - the formula is Pi x Radius2
To find circumference you must multiply twice the radius by π, or using the diameter, if it gives it to you, multiply that by π.
because cicle sounds weird. r is used as an abbreviation for radius meaning half the diameter of the circle.
the perimeter of a circle, also known as the circumference, is calculated by diameter multiplied by pi. Alternatively : 2 x radius x pi
East Midlands International CiCLE Classic was created in 2005.
The area of a circle is pi times radius times radius. 6 cm = 2 times 3 cm radius = 3 cm. SO, pi times 3 cm times 3 cm 9 pi pi is approximately 3.141592... 9 times 3.141592... is 28.274328...
it is a sphere not a cirlce.