## Calculate cone area Do you need calculate the area of a cone? Use our calculator and you will be able to do it immediately from the radius of the base and the length of the generatrix of this geometric figure.

For orbtain the area of the cone just fill in these data in the calculator and press the calculate button, but remember that both the radius and the generatrix must be in the same units for the result to be correct. If for example you have the radius in centimeters and the generatrix in meters, you must convert one of them to match.

## Permutation calculator

When we talk about permutations we are taking into account the order of the elements of the set, that is, it is an ordered combination. It is important not to confuse permutations with combinations, since in the latter the order does not matter.

To make it easier for you to calculate permutations online we have created a calculator that takes into account whether the permutation is with repetition or without repetition. If you have doubts about which one to use in each case, read on.

## Tetrahedron

Do you need calculate the area or volume of a tetrahedron? Here is a calculator that will allow you to do so by simply entering the length of one of the sides of this figure, that is, the value of its edge.

When you have selected what you want to calculate (area or volume) and typed in the length of the edge of the tetrahedronClick on the calculate button and you will get the result you are looking for.

## Notable products

All about the remarkable identities: learn how to solve them with their formula and the examples or solved exercises we offer you for each one.

## Standard deviation

Do you need calculate the standard deviation of a data set? With our calculator you can obtain the standard deviation by simply typing each figure, separated by a space or a comma. If you are entering decimal numbers, use the period '.' as decimal separator.

When you have typed in all the numbers, click the calculate button and you will automatically get the deviation value as well as other statistical measures such as variance or mean.

## Variance

If you need calculate the variance of a data setour online calculator allows you to obtain the result immediately.

All you have to do is write each number separated by spaces or by a comma. If you are going to enter a decimal number, you will have to use the point as decimal separator (example: 3.14).

## Arithmetic mean Calculator

Do you need calculate the average of several numbers? Use our online arithmetic mean tool.

You only have to write the numbers separated by a space or comma and click the calculate button to obtain the online average. If you are going to enter decimal figures, type a . as decimal separator (2.82, for example).

## Calculate 70 percent

Calculate 70 percent of an amount is a snap with our online calculator. Just enter the amount from which you want to get your 70%, click the calculate button and you will automatically have the result, without performing unnecessary operations.

Even so, we'll show you how to calculating the 70% of a number manually, with examples and how you can calculate the percentage in Excel.

## Calculate the triple of a number

Calculate the double of a number o triple an amount are very common and easy calculations, however, as the number gets higher or involves decimals, the operation gets a little more complicated.

Here is a tool that will allow you to calculate the triple of a number instantly, and you can even choose the number of decimal places with which you want the result.

## Calculate 25 percent

Do you need to calculate 25 percent of a number? Save unnecessary calculations and use our online calculator to find the 25% of an amount instantly.

Just type the number, press the calculate button and you will immediately get the result you are looking for.

## Calculate 15 percent

If you want to calculate 15 percent of an amount instantly and without calculation, then you are in the right place.

Below is an online calculator for take 15 percent of a number. All you have to do is type the number, click on the Calculate button and you will immediately obtain the 15% that corresponds to it. Easy, isn't it?

## Calculate 75 percent

Do you want to calculate 75 percent of an amount? Here you can do it instantly thanks to our online calculator.

You only have to enter the number of the number you want calculate your 75% and press the Calculate button to obtain the result.

## Calculate the double of a number

Do you need calculate the double of a number? You can do it immediately with our online calculator to double any amount, even if it has decimals.

You only have to write the number of the number you want calculate your doubleSelect with how many decimal places you want the final result and press the calculate button to know the result.

## Calculate half of a number

Do you want to calculate half a number online? Do it automatically with our calculator to get half of any number, choosing the number of decimal places with which you want the result.

## Multiplying 2×2 matrix

Multiplying 2×2 matrix can be a tedious, time-consuming and error-prone task. Therefore, we have prepared for you a calculator capable of solving this operation instantly and for that, you just have to fill in the values of the 2x2 matrix you want to multiply.

With this tool you will also be able to calculate the square of a 2×2 matrix. In this case, the values of the elements must match each other. When you have it ready, click the calculate button and you will know how the matrix have been multiplied step by step and the final result.

## Transposed Matrix

The transposed matrix calculator online is a tool that allows you to exchange rows for columns of a matrix automatically. Just select the size of the matrix from the available sizes and click the Calculate button to get the transpose of that matrix.

If you want to know everything about the transposed matrixRead on and we will tell you all about this type of matrix used in the world of mathematics, physics and other disciplines.

## Inverse 2×2 matrix online

Do you need calculate the inverse 2×2 matrix online to save time? Use our calculator and you will be able to get the inverse matrix automatically in a matter of seconds, step by step.

To do this, you must write down each of the elements that make up the 2×2 inverse matrix and click the calculate button when you have done it. After that, you will know the result and the previous steps involved in this calculation such as the 2×2 determinant and the adjoint matrix.

## Inverse 3×3 matrix online

Calculate the inverse 3×3 matrix online step by step with our calculator that will allow you to find the inverse of a matrix instantly.

Just fill in correctly all the values that compose the 3×3 matrix and click on the calculate button to get the result step by step how its inverse matrix has been calculated from the formula we will see below. Discover how to calculate the inverse of a 3×3 matrix.

## Inverse matrix 4×4 online

Do you want to calculate the inverse matrix online? Then you are in the right place.

Below you will find a calculator that will allow you to save you a lot of time when it comes to calculate a 4×4 inverse matrix but in addition, we show you how to do the calculation manually through the 4×4 determinant and the transposed matrix of the adjoint.

## 3x3 matrix multiplication calculation

Use our calculator for 3x3 matrix multiplication online and saves time in this operation which, although is simple to perform, can play a trick on us if we do it quickly.

If you like, you can also use the calculator to make 3×1 or 3×2 matrix multiplications. You only have to leave the data in the corresponding column empty and that's it.

## Determinant of 2×2 matrix online

If you want to calculate the determinant of a 2×2 matrix onlinethen you are in the right place. Here you will find a calculator that will allow you to know the value of the determinant, but we also show you how to calculate it manually, in Excel or using the scientific calculator.

You choose how to find the determinant of a 2×2 matrix.

## Determinant of 3×3 matrix online

Calculate the determinant of a 3×3 matrix online is possible with our calculator. Just fill in the elements that make up the determinant and click on the calculate button to see the result, including the step-by-step method of solving the attached determinants.

We will also teach you how to solving 3×3 determinants by the Sarrus method or using Excel. Read on and you will find all this information and much more.

## Determinant of 4×4 matrix online

Solve the determinant of a 4×4 matrix online with our calculator and learn how it is calculated using one of the following methods.

If you want to calculate online the determinant of a 4×4 matrixJust fill in the values in our calculator and press the calculate button to get the result you are looking for:

## Factorial decomposition

If you need to know the decomposition into factors of a numberyou are in the right place. Here you will find a calculator that will allow you to know instantly the factorization of any positive integer.

In case you enter a number that cannot be broken down into factors, it will also show you that the number you have entered is a prime number.

## Online calculator

Do you need a online calculator to do a quick operation? Here is one that will allow you to solve operations such as addition, subtraction, multiplication or division.

You can use the buttons to type the operation on the screen or type it manually using your computer keyboard. When you have it ready, you simply have to press the key represented by the equal symbol (=) and you will get the result.

## Absolute value calculator

Do you need calculate the absolute value of a number? Don't worry, we have for you a tool that will allow you to calculate the result of this function so often used in mathematics.

You only need to enter the number of the number you want know its absolute value and press the calculate button. to get the result you are looking for.

## Calculate 10 percent

Calculates the 10% of a number to know the discount applied in a discount or offer of a particular product. Also the reduced VAT applies this percentage on the products although in this case, it is not a rebate since this tax is added on the value of the item in question, something that we tell you in our VAT calculator.

Calculating the percentage of an amount can be very useful, so thanks to our percentage calculator, you will be able to take out 10 percent of the figure you want. Just type the number, click on the Calculate button and you will automatically know the value of your 10%. If you want to calculate any other percentage, do not hesitate to visit our percent calculator.

## Calculate 30 percent of a number

Take 30% out of a quantity is quite useful, especially to know the discount and offers that have that particular rebate.

Our percentage calculator will allow you to find out 30 percent of the number you need instantly. Just type in the figure, hit the Calculate button and you'll automatically know how much your 30% is. If you need to find out any other percentage, we also have a percent calculator in which you will be able to set the exact amount and percentage.

## Calculate 20 percent of an amount

Calculate 20% of a quantity can be very useful at a given moment to know the discount applied in an offer or any other purpose.

Our percentage calculator will allow you to to get that 20 percent of the figure you want immediately. Just type the amount, press the Calculate button and you will automatically know the value of your 20%. If you want to calculate any other percentage, do not hesitate to visit our percent calculator.

## Subtraction calculator

Solve online subtractions with our calculator. Just type in the numbers involved in the operation and press the calculate button to get the result.

You can subtract up to four numbers but if you don't have that many, you can leave their value blank and they will not be taken into account.

If you need to do sums online, our calculator will allow you to calculate the sum of up to four numbers automatically. If you do not need to add four numbers, you can leave their values blank and they will not be taken into account to calculate the final result.

## Calculate fifth root of a number

We are used to calculate square roots or even the cube root of a number but what if we are asked calculate the fifth root? The procedure to follow is similar to the previous examples, although in this case, we have to look for a number that when raised to five, gives us the original number.

So that don't waste time calculating the fifth root of a numberwe have developed a calculator for this purpose. Just type the number, press the calculate button and you will immediately know its fifth root.

## Calculate fourth root of a number

If you have to calculate the fourth root of a number and you don't know how to do it, our online calculator will solve the problem for you automatically. Just type in the number you want to calculate the fourth root of and click the calculate button to get the result.

## Table of 2

Multiply by 2 is one of the easiest operations there is, even when we are starting to do our first number multiplications.

Below you have a series of material that will undoubtedly be very useful to learn how to multiply by two.

## Table of 3

The multiplication table of number three is one of those that must be learned by heart or by practice, since there is no rule or trick that facilitates its assimilation, so it will cost us more than with the table of 2.

Anyway, three is a fairly small number so except for multiplications by very large numbers, it won't be much of a problem to multiply by it. We will do our best to help you with all the material below.

## Table of 4

Multiply by four is not difficult but this table forces us to memorize it little by little because, as it happens with the 3" tableThere is no trick to writing it quickly as there is with other multiplication tables.

Hopefully, with the material you will find here related to the 4" tableWe can help you as much as possible.