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circleArea

Language/Type: JavaScript Math parameters return
Author: Melissa Medsker-Galloway (on 2016/11/18)

Write a function named circleArea that accepts the radius of a circle as a parameter (as a real number) and returns the area of a circle with that radius. For example, the call of area(2.0) should return 12.566370614359172. You may assume that the radius passed is a non-negative number.

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This is a function problem. Write a JavaScript function as described. Do not write a complete program; just the function(s) above.

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