The image above represents a cylinder.

To compute the area of a cylinder requires two essential parameters which are the radius and height of the cylinder.

The formula for computing the area of a cylinder is:

A = 2πrh + 2πr^{2}

Where:

A = Area of a cylinder

r = radius of the cylinder

h = height of the cylinder

Let’s solve an example

Find the area of a cylinder with a radius of 3 cm and a height of 5 cm.

This implies that:

r = radius of the cylinder = 3

h = height of the cylinder = 5

A = 2πrh + 2πr^{2}

A = 2(3.142) x 3 x 5 + 2(3.142) x 3^{2}

A = 150.82

Therefore, the **area of the cylinder** is **150.82 cm ^{2}**.

**Calculating the Height of a cylinder when Area and Radius is Given**

The formula is h = ^{A}/ _{2πr} – r

Where;

A = Area of a cylinder

r = radius of the cylinder

h = height of the cylinder

Let’s solve an example:

Find the height of a cylinder with an area of 600 cm² and a radius of 5 cm

This implies that;

A = Area of the cylinder = 600 cm²

r = radius of the cylinder = 5 cm

h = ^{A} / _{2πr} – r

h = ^{600} / _{2(3.142)(5)} – 5

h = ^{600} / _{31.42} – 5

h = 19.10 – 5

h = 14.10

Therefore, the** height of the cylinder **is** 14.10 cm.**

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

To get the answer and workings of the area of a cylinder 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 Cylinder** under **Mensuration**

The screenshot below displays the page or activity to enter your values, to get the answer for the area of a cylinder according to the respective parameters which are the radius and height of the cylinder.

Now, enter the values appropriately and accordingly for the parameters as required by the **example** above where the** radius of the cylinder** is **3 cm** and the **height of the cylinder** is **5 cm**.

Finally, click on the **Calculate** button

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