The value represents a half-rotation in the radian angle system.
The POWER function is an alternative to theexponent operator(^).
Area of a circle
To calculate the area of a circle, you can use the PI function together with the exponent operator (^). In the example shown, the formula in C5, copied down, is: =PI()*B5^2 which calculates the area of a circle with the radius given in column B.
