In the Rectangle class, create two private attributes named length and width. Both length and width should be data type double.

Task $1$: Write public set and get methods to set and get the values for length.

Task $2$: Write public set and get methods to set and get the values for width.

Task $3$: Write a public calculateArea$()$ method and a public calculatePerimeter$()$ method to calculate and return the area of the rectangle and the perimeter of the rectangle.

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$//$ This program uses the programmer$-$defined Rectangle class.

#include "RectangleImp. cpp$"$

#include

using namespace std;

using namespace RectangleImp;

int main$()$

$\{$

$$

$//$ Create Rectangle objects here

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$//$ Set the lengths and widths here

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$//$ Print the areas and perimeters here

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$$return $0$;

$\}$

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Set the$$length$$of$$rectangle$1$to$10\mathrm{.}0$and the$$width$$to$5\mathrm{.}0.$ Set the$$length$$of$$rectangle$2$to$7\mathrm{.}0$and the$$width$$to$3\mathrm{.}0.$

Print the value of rectangle$1$s perimeter and area, and then print the value of rectangle$2$s perimeter and area.

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Namespace RectangleImp $\{$

$//$ Rectangle

$$class Rectangle

$\{$

$$ public:

$//$ Declare public methods here

$$ private:

$//$ Create length and width here

$\}$;

$$

$$void Rectangle::setLength$($double len$)$

$\{$

$//$ Write setLength here

$\}$

$$

$$void Rectangle::setWidth$($double wid$)$

$\{$

$//$ write setWidth here

$\}$

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$$double Rectangle::getLength$()$

$\{$

$//$ write getLength here

$\}$

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$$double Rectangle::getWidth$()$

$\{$

$//$ write getWidth here

$\}$

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$$double Rectangle::calculateArea$()$

$\{$

$//$ write calculateArea here

$\}$

$$

$$double Rectangle::calculatePerimeter$()$

$\{$

$//$ write calculatePerimeter here

$\}$

$\}$

$$