The area of a circle is described by the equations:
A=πr2
and the perimeter of a circle is described by the equation:
C=πd
where:
A is the Area
C is the circumference, or perimeter
r is the radius
d=diameter=2r
π= pi, the ratio of diameter to circumference (3.14159)
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Unless the area is a regular polygon (or a circle) you cannot.
There is no perimeter of a circle. Only flat shapes have perimeters. You can however, find the circumference, surface area, and volume.
The answer depends on what information you have about the circle. If you know the radius, thenArea = pi*r^2 and perimeter = 2*pi*r
Area of any circle = pi*radius2
void main() { float pi=3.14,area,perimeter,r=2; area=pi*r*r; perimeter=2*pi*r; getch(); }