In this **HackerRank Day 1: Arithmetic Operators 10 days of javascript problem solution** Complete the following functions in the editor below:

- getArea(length, width): Calculate and return the area of a rectangle having sides length and width.
- getPerimeter(length, width): Calculate and return the perimeter of a rectangle having sides length and width.

The values returned by these functions are printed to stdout by locked stub code in the editor.

## Problem solution in JavaScript programming.

/**
* Calculate the area of a rectangle.
*
* length: The length of the rectangle.
* width: The width of the rectangle.
*
* Return a number denoting the rectangle's area.
**/
function getArea(length, width) {
return (length * width);
}
/**
* Calculate the perimeter of a rectangle.
*
* length: The length of the rectangle.
* width: The width of the rectangle.
*
* Return a number denoting the perimeter of a rectangle.
**/
function getPerimeter(length, width) {
return 2*(length + width);
}