# Radical 20 simplified

The value of the square root of 20 is 4.

The square root of 20 rounded up to 8 decimal places is 4. The square root of 20 can be obtained by the number whose square gives the original number. What number that could be? It can be seen that, there are no integers whose square will give To check this answer, we can find 4. A rational number is either terminating or non-terminating and has a repeating pattern in its decimal part.

## Radical 20 simplified

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If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Search for courses, skills, and videos. Simplifying square roots. About About this video Transcript. Roots are nice, but we prefer dealing with regular numbers as much as possible. Created by Sal Khan. Want to join the conversation? Log in.

### Radical 20 simplified

The value of the square root of 20 is 4. This value we can easily get from the calculator. But, students should know how to simplify the root of any number without using a calculator. This is possible by using two methods: Prime factorisation and long division method. Both methods are very simple and are easy ways to find the square root. Thus, here we can see, 20 is not a perfect square, because we cannot pair digit 5 after factoring Only 2 2 can be taken out of the root. Here, we just have only one pair of numbers, which is 2.

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Our Team. United Kingdom. Why is the Square Root of 20 an Irrational Number? United States. Maths Tables. Test your Knowledge on Square Root of 20 Q 5. The square root of 20 rounded up to 8 decimal places is 4. By the given information:. Our Journey. So it is NOT a rational number.

Always on the lookout for fun math games and activities in the classroom? Try our ready-to-go printable packs for students to complete independently or with a partner! Here you will learn about how to simplify radicals including the definition of a radical, the rules of radicals and how to write radicals in their simplest form.

Learn Square Root Of 20 with tutors mapped to your child's learning needs. Hence, the length of the room is 4. We have learned to calculate the value of the square root of 20 using prime factorisation. This is non-terminating and the decimal part has no repeating pattern. Solution: Let 'r' be the radius of the circle. Learn Practice Download. It can be seen that, there are no integers whose square will give Terms and Conditions. Upon prime factorizing 20 i. So it is NOT a rational number.

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