pi*radius squared
use the circumference formula of a circle circumference of a circle=2*pi*r pi=22/7 r-radius of a cirle Now the answer for the problem is 11.69
Area = circumference squared... You do circumference divided by 4,... and then divide that by Pi.
circumference = pi*diameter
The area is 346.639 cm2
12.732 (rounded)
The line from the centre of the circle to any point on its circumference
16 pi = almost exactly 50¼
Approximately 37.68 inches. The formula is the value of Pi times the diameter of the cirle. Pi rounds to 3.14. Thus 12 X 3.14 = 37.68.
The cicumference of any circle divided by its diameter is aways equal to pi.
circumference=r2pi
circumference of a cirle = 2*pi*r pi=3.14 r=radius