JavaScript Math Object Lab
Easy
19
1
77.1% Acceptance
In this lab, the primary objective is to understand and implement functions that perform geometric calculations related to circles. Specifically, participants will be tasked with creating two functions: calcCircumference
and calcArea
. Each function leverages the mathematical constant π (Pi), reflecting the relationship between the diameter (or radius) of a circle and its circumference and area respectively.
Function Objectives:

calcCircumference(radius)
: This function should calculate the circumference of a circle.
 The formula to calculate circumference
C
isC = 2πr
, wherer
is the radius of the circle.  The function takes one argument,
radius
, which represents the radius of the circle.  It returns the calculated circumference as a numeric value.

calcArea(radius)
: This function should calculate the area of a circle.
 The formula to calculate area
A
isA = πr^2
, wherer
is the radius of the circle.  Similar to
calcCircumference
, this function takes one argument,radius
.  It returns the calculated area as a numeric value.
Steps to Implement:

Write the Function
calcCircumference
: Start by declaring the function using the keyword
function
.  Name the function
calcCircumference
and ensure it accepts one parameter,radius
.  Inside the function, use the
Math.PI
constant to calculate the circumference.  Return the result.
 Start by declaring the function using the keyword

Write the Function
calcArea
: Declare another function named
calcArea
.  Accept
radius
as the parameter for this function as well.  Calculate the area using
Math.PI
&Math.pow
functions.  Return the result of the calculation.
 Declare another function named

Export the Functions:
 Both functions should be individually exportable and usable in other modules.
 Use the ECMAScript module (ESM) syntax for exporting.
calcCircumference()
should be named export using theexport
keyword whilecalcArea
function should be a default export using theexport default
keywords.