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Where Is The Square Root Button on Apple Calculator

Reviewed by Calculator Editorial Team

The square root function is a fundamental mathematical operation available in Apple's Calculator app. This guide explains how to locate and use this feature on both iPhone and iPad devices.

How to Find the Square Root Button

Apple's Calculator app has a dedicated square root button that's easy to find once you know where to look. Here's how to locate it:

On iPhone

  1. Open the Calculator app from your home screen or App Library.
  2. Tap the "More" button (three horizontal dots) at the bottom of the calculator interface.
  3. Scroll through the available functions until you see the "√x" button (the square root symbol).
  4. Tap the "√x" button to add it to your calculator.

On iPad

  1. Launch the Calculator app from your home screen.
  2. Tap the "More" button (three horizontal dots) at the bottom of the calculator interface.
  3. Scroll through the available functions until you find the "√x" button.
  4. Tap the "√x" button to add it to your calculator.

Note: The square root button may not appear in the default calculator view. You'll need to add it from the "More" functions menu.

How to Use the Square Root Function

Once you've added the square root button to your calculator, using it is straightforward:

  1. Enter the number you want to find the square root of.
  2. Tap the "√x" button you added earlier.
  3. The calculator will display the square root of your number.

For example, to find the square root of 25:

  1. Type "25" on the calculator.
  2. Tap the "√x" button.
  3. The result "5" will appear.

Tip: You can also use the square root function with decimal numbers. For example, √2.25 = 1.5.

Square Root Formula

The square root of a number x is a value that, when multiplied by itself, gives x. Mathematically, this is represented as:

√x = y where y × y = x

For example:

  • √9 = 3 (because 3 × 3 = 9)
  • √16 = 4 (because 4 × 4 = 16)
  • √2 = 1.41421356... (an irrational number)

Square Root Examples

Here are some practical examples of using the square root function:

Example 1: Finding the side length of a square

If you know the area of a square is 64 square units, you can find the length of one side by taking the square root of the area:

Side length = √Area Side length = √64 = 8 units

Example 2: Calculating distance from a point

In coordinate geometry, the distance between two points (x₁, y₁) and (x₂, y₂) can be found using the distance formula:

Distance = √[(x₂ - x₁)² + (y₂ - y₁)²]

For points (3, 4) and (6, 8):

Distance = √[(6-3)² + (8-4)²] = √[9 + 16] = √25 = 5 units

Frequently Asked Questions

Is the square root function available on all Apple devices?

Yes, the square root function is available on all Apple devices running iOS or iPadOS, including iPhones and iPads.

Can I use the square root function with negative numbers?

No, the square root function in Apple's Calculator app only works with non-negative numbers. Attempting to find the square root of a negative number will result in an error.

How do I remove the square root button from my calculator?

To remove the square root button, tap and hold the button until it starts to wiggle, then tap the "×" button in the top-left corner of the button.

Is there a way to calculate cube roots on Apple Calculator?

No, Apple's Calculator app does not have a built-in cube root function. You would need to use the exponent function (yˣ) with x = 1/3 for cube roots.