The image above is a rectangle with a length of 8 cm and a width of 5 cm. To calculate the perimeter of a rectangle requires two parameters which are the length of the rectangle and the width of the rectangle.

The formula for calculating the perimeter of a rectangle is:

P = 2 (l + w)

Where:

P = Perimeter of a Rectangle

l = Length of a Rectangle

w = Width of a Rectangle

Let’s solve an example:

Find the perimeter of a rectangle where the length of the rectangle is 8 cm and the width of the rectangle is 5 cm.

This implies that:

l = Length of the Rectangle = 8 cm

w = Width of the Rectangle = 5 cm

P = 2 (l + w)

P = 2 (8 + 5)

So, P = 2 (13)

P = 26

Therefore, the perimeter of the rectangle is 26 cm.

### How to Calculate the Length of a Rectangle when the Perimeter of the Rectangle and the Width of the Rectangle is Given

l = ^{P} / _{2} – w

Where:

l = Length of the Rectangle

P = Perimeter of the Rectangle

w = Width of the Rectangle

Let’s solve an example:

Find the length of a rectangle where the perimeter of the rectangle is 36 cm and the width of the rectangle is 6 cm.

This implies that:

P = Perimeter of the Rectangle = 36 cm

w = Width of the Rectangle = 6 cm

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l = ^{P} / _{2} – w

l = ^{36} / _{2} – 6

That is, l = 18 – 6

l = 12

Therefore, the length of the rectangle is 12 cm.

### How to Calculate the Width of a Rectangle when the Perimeter of the Rectangle and the Length of the Rectangle is Given

w = ^{P} / _{2} – l

Where:

w = Width of the Rectangle

P = Perimeter of the Rectangle

l = Length of the Rectangle

Let’s solve an example:

Find the width of a rectangle where the perimeter of the rectangle is 120 cm and the length of the rectangle is 10 cm.

This implies that:

P = Perimeter of the Rectangle = 120 cm

l = Length of the Rectangle = 10 cm

w = ^{P} / _{2} – l

w = ^{120} / _{2} – 10

Then, w = 60 – 10

w = 50

Therefore, the width of the rectangle is 50 cm.

### How to Calculate and Solve for the Perimeter, Length and Width of a Rectangle Using Nickzom Calculator

Nickzom Calculator â€“Â The Calculator EncyclopediaÂ is capable of calculating the perimeter of a rectangle.

To get the answer and workings of the perimeter of a rectangle using theÂ Nickzom Calculator â€“ The Calculator Encyclopedia.Â First, you need to obtain the app.

You can get this app via any of these means:

WebÂ â€“Â https://www.nickzom.org/calculator-plus

To get access to theÂ professionalÂ version via web, you need toÂ registerÂ andÂ subscribeÂ forÂ NGN 1,500Â perÂ annumÂ to have utter access to all functionalities.

You can also try theÂ demoÂ version viaÂ https://www.nickzom.org/calculator

Android (Paid)Â â€“Â https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

Android (Free)Â â€“Â https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

Apple (Paid)Â â€“Â https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to theÂ Calculator Map,Â then click onÂ MensurationÂ under theÂ MathematicsÂ section

Now, click onÂ Perimeter of a RectangleÂ underÂ Mensuration

The screenshot below displays the page or activity to enter your values, to get the answer for the perimeter of a rectangle according to the respective parameters which are the length of the rectangle (l) and the width of the rectangle (w).

Now, enter the values appropriately and accordingly for the parameters as required by theÂ exampleÂ above where theÂ length of the rectangleÂ is 8Â cmÂ and theÂ width of the rectangleÂ is 5Â cm.

Finally, click on the Calculate button

As you can see from the screenshot above,Â Nickzom CalculatorÂ â€“ The Calculator Encyclopedia solves for theÂ perimeter of a rectangleÂ and presents the formula, workings and steps too.