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CodingBat code practice

 

areaOfCircle


Write a function that returns the area of a circle that has a radius of length r. Please use the constant Math.PI for pi.


areaOfCircle(0) → 0.0
areaOfCircle(1.5) → 7.0685834705770345
areaOfCircle(1) → 3.141592653589793

...Save, Compile, Run (ctrl-enter)

public double areaOfCircle(double r){ }

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