Using 3.14 as Pi the area of circle is: 0
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If you mean 8*pi units then its radius is 4 units and its area is pi*4 squared = 16*pi square units or about 50 square units
Pi is related to the area and the circumference of the circle. The area is Pi multiplied by the radius of the circle squared and the circumference is Pi times the diameter of the circle. if you're wondering how it works, pi is the area of a circle with radius of 1 (unit), and the circumference of a circle with a radius of ½ (unit).
No, the circumference divided by the radius will always be pi for a circle.
Circumference of a circle = 2*pi*radius or pi*diameter Area of a circle = pi*radius2
The circumference of a circle is given by Circumference = pi x diameter. The area of a circle is given by Area = pi/4 x diameter2. Thus for a circle with circumference c = 12 in. The area will equal a = 11.459 in2.
To find the circumference of a circle then multiply pi (3.14159265...) by the diameter of the circle. To find the area then multiply pi by the radius squared.