It is 2*pi/3.
(pi*r2)/2 + 4000
Circumference equals the diameter times pi. The diameter is 2 times radius. Radius equals Circumference divided by pi then divided by 2.
A soccer ball is 27 to 28 inches in circumference. Circumference is pi times diameter, or 2 times pi times radius. Radius = circumference divided by (2 times pi).
Pi. The twos cancel each other out.
A soccer ball is 27 to 28 inches in circumference. Circumference is pi times diameter, or 2 times pi times radius. Radius = circumference divided by (2 times pi).
the area of a circle is pi times radius2. half a circle is pi times radius2 divided by 2.
pi is not divided into anything - unless you specify pi/2 or pi/3.6
2
Area of a circle is: pi times radius squared
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