The image above is a sphere.

To compute the area of a sphere, one essential parameter is needed and this parameter is the radius of the sphere (r). You can also use diameter of the sphere (d).

The formula for calculating the area of a sphere:

A = 4πr²

Where;

A = Area of the sphere

r = Radius of the sphere

Let’s solve an example:

Find the area of a sphere when the radius of the sphere is 6 cm.

This implies that;

r = Radius of the sphere = 6 cm

A = 4πr²

A = 4 x 3.142 x 6²

A = 4 x 3.142 x 36

A = 452.4

Therefore, the **area of the sphere** is **452.4 cm ^{2}.**

**Calculating the Area of a sphere using Diameter of the sphere.**

A = πd^{2}

Where;

A = Area of the sphere

d = Diameter of the sphere

Let’s solve an example:

Find the area of a sphere when the diameter of the sphere is 8 cm.

This implies that;

d = Diameter of the sphere = 8 cm

A = πd^{2}

A = 3.142 x 8^{2}

A = 3.142 x 64

A = 201.08

Therefore, the **area of the sphere** is **201.08 cm ^{2}.**

**Calculating the Radius of a sphere using Area of the sphere.**

r = √(^{A} / _{4π})

Where;

A = Area of the sphere

r = Radius of the sphere

Let’s solve an example:

Find the radius of a sphere when the area of the sphere is 22 cm** ^{2}**.

This implies that;

A = Area of the sphere = 22 cm^{2}

r = √(^{A} / _{4π})

r = √(^{22} / _{4 x 3.142})

r = √(^{22} / _{12.57})

r = √1.75

r = 1.32

Therefore, the **radius of the sphere** is **1.32 cm.**

**Calculating the Diameter of a sphere using Area of the sphere.**

d = √(^{A} / _{π})

Where;

A = Area of the sphere

d = Diameter of the sphere

Let’s solve an example:

Find the diameter of a sphere when the area of the sphere is 28 cm** ^{2}**.

This implies that;

A = Area of the sphere = 28 cm^{2}

d = √(^{A} / _{π})

d = √(^{28} / _{3.142})

d = √8.912

d = 2.99

Therefore, the **diameter of the sphere** is **2.99 cm.**

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

To get the answer and workings of the area of a sphere 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 Sphere** under **Mensuration**

The screenshot below displays the page or activity to enter your value, to get the answer for the area of a sphere according to the respective parameter which is the radius of the sphere (r).

Now, enter the value appropriately and accordingly for the parameter as required by the **example** above where the **radius of the sphere** is **6 cm.**

Finally, click on **Calculate**

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