## How to hide apps on Samsung Galaxy J3 Pro

The feature allows you to hide apps that you want to keep from being seen by others.

**What is circle?**

In terms of the plane, the circle is the area limited internally by a circle. Center, the radius of the circle is the center, the radius of the surrounding circle.

Calculate the area of a circle is to calculate the area inside the circle.

*The pink part is the area of the circle*

The area of a circle is calculated by the formula: **Square radius of circle multiplied by Pi** .

*The formula for calculating the area of a circle*

**Inside:**

**+ r** : Radius of a circle

**+ π** : Constant Pi (π = 3.14)

The formula for the area of a circle helps you calculate the total surface area inside the circle.

The circumference of a circle, also known as the length of a circle, is the boundary line separating the inside from the outside of the circle.

*Circumference is the length of the circle*

The circumference of the circle is calculated using the formula: **Diameter multiplied by Pi or twice the radius multiplied by Pi** .

*Formula to calculate the circumference of a circle*

**In which** :

**+ r** : Radius of a circle

**+ d** : Diameter of circle

**+ π** : Constant Pi (π = 3.14)

Because circles cannot be measured with a ruler, you can use the circumference of a circle to get the length of the circle.

A circular fan shape is a part of a circle limited by two radii and an arc shielded by these two radii.

*The blue part is the circular fan-shaped area*

The area of a round fan is calculated by the formula:

*The formula for calculating the area of a round fan*

**In which** :

**+ r** : Radius of a circle

**+ π** : Constant Pi (π = 3.14)

**+ l** : The length of the arc

The fan-shaped area formula makes it easy to calculate the area of the part of the plane inside the circle.

**See also** :

>>> Synthesize a table of full, detailed and easy-to-understand trigonometric formulas

>>> The formula for calculating the area of a trapezoid, trapezoidal perimeter fully understandable

*Above are the formulas to calculate the perimeter, the area of a circle and the circle fan. Thank you for watching and see you in the following articles.*

The feature allows you to hide apps that you want to keep from being seen by others.

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Software updates help the machine add new features or improve the machine's performance in the user experience.

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