The above image is a rhombus.

To compute the area of a rhombus, two essential parameters are needed and this parameters are length of the diagonal (p) and length of the diagonal (q).

The formula for calculating the area of a rhombus:

A = ^{pq }⁄ _{2}

Where;

A = Area of the rhombus

p = length of the diagonal

q = length of the diagonal

Let’s solve an example;

Find the area of a rhombus when the length of the diagonal (p) is 10 cm and the length of the diagonal (q) is 18 cm.

This implies that;

p = length of the diagonal = 10 cm

q = length of the diagonal = 18 cm

A = ^{pq} ⁄ _{2}

A = ^{10 x 18} / _{2}

A = ^{180} / _{2}

A = 90

Therefore, the **area of the rhombus** is **90 cm ^{2}.**

**Calculating the length of the diagonal (p) using Area of the Rhombus and length of the diagonal (q).**

p = ^{2A} / _{q}

Where;

A = Area of the rhombus

q = length of the diagonal

Let’s solve an example;

Given that the length of the diagonal (q) is 20 cm with an area of 60 cm^{2}. Find the length of the diagonal (p)?

This implies that;

A = Area of the rhombus = 60 cm^{2}

q = length of the diagonal = 20 cm

p = ^{2A} / _{q}

p = ^{2 x 60} / _{20}

p = ^{120} / _{20}

p = 6

Therefore, the **length of the diagonal** is **6 cm.**

**Calculating the length of the diagonal (q) using Area of rhombus and length of the diagonal (p).**

q = ^{2A} / _{p}

Where;

A = Area of the rhombus

p = length of the diagonal

Let’s solve an example;

Given that the length of the diagonal (p) is 40 cm with an area of 90 cm^{2}. Find the length of the diagonal (q)?

This implies that;

A = Area of the rhombus = 90 cm^{2}

p = length of the diagonal = 40 cm

q = ^{2A} / _{p}

q = ^{2 x 90} / _{40}

q = ^{180} / _{40}

q = 4.5

Therefore the **length of the diagonal (q)** is **4.5 cm.**

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

To get the answer and workings of the area 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** Area of a Rhombus **under **Mensuration**

The screenshot below displays the page or activity to enter your values, to get the answer for the area of a rhombus according to the respective parameters which are the** length of the diagonal (p)** and **length of the diagonal (q).**

Now, enter the values appropriately and accordingly for the parameters as required by the **example** above where the **length of diagonal (p)** is **10 cm** and **length of diagonal (q)** is **18 cm.**

Finally, **Click on Calculate**

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