The image above is a rhombus.

To compute the area of a rhombus, one essential parameter is needed and this parameter is length of side (a).

The formula for calculating the perimeter of a rhombus:

P = 4a

Where;

P = Perimeter of the rhombus

a = length of side

Let’s solve an example;

Find the perimeter of a rhombus when the length of side is 30 cm.

This implies that;

a = Length of side = 30 cm

P = 4a

P = 4 x 30

P = 120

Therefore, the **perimeter of the rhombus** is **120 cm.**

**Calculating the Length of Side using the Perimeter of the Rhombus.**

a = ^{P} / _{4}

Where;

a = Length of Side

P = Perimeter of the rhombus

Let’s solve an example;

Given that the perimeter of the rhombus is 180 cm. Find the length of side?

a = ^{P} / _{4}

This implies that;

P = perimeter of the rhombus = 180 cm

a = ^{P} / _{4}

a = ^{180} / _{4}

a = 45

Therefore, the **length of side** is **45 cm.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the perimeter of a rhombus.

To get the answer and workings of the perimeter of a rhombus using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **for** NGN 1,500 **per** annum** to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Mensuration**** **under the **Mathematics** section

Now, click on** Perimeter of a Rhombus **under **Mensuration**

The screenshot below displays the page or activity to enter your value, to get the answer for the perimeter of a rhombus according to the respective parameter which is the **length of side (a).**

Now, enter the values appropriately and accordingly for the parameter as required by the **example** above where the **length of side (a) **is** 19 cm. **

Finally, **Click on Calculate**

As you can see from the screenshot above, **Nickzom Calculator** – The Calculator Encyclopedia solves for the perimeter of a rhombus and presents the formula, workings and steps too.