A number’s square root is the value which, when multiplied by itself, gives the original number. Let”s explore the simulation below to find the square root of any number, such as the square root of 89. Once you grasp the basic concept of square roots, any lesson can be easily solved.In this lesson, you will learn the square root of 89 and how to find the square root of 89.
You are watching: Square root of 89 in radical form
Square Root of 89: √89=9.43 (up to 2 decimal place)Square of 89: 89² =7921
Table of Contents
The square root of a number n can be written as √n. It means that there is a number aa such that a×a=n. This can also be written as, a2=n ⇒ a=√n. So, a is equal to the square root of n.Now, if n=89, then a=√89 is the square root of 89. In the radical form, the square root of 89 can be represented by √89. The square root of 89 = 9.43 in the decimal form up to 2 decimal places.
A rational number is a number that can be expressed in the form of p/q. A number that is not a rational number is called an irrational number. Due to the nature of its non-repeating and non-terminating decimal expansion, the square root of 89 cannot be written in the form of p/q, hence, it is an irrational number.The value of the square root of 89 in decimal form is 9.433981.. so on, The square root of a number can have two values, a positive and a negative value. So, √89=+9.433981. Hence, The square root of 89 is an irrational number with never-ending digits.
The long division method helps us to find a more accurate value of the square root of a number. Let”s see the steps to find the square root of 89 by the long division method.
Step 1: Divide the number 89 by 9, (because 92 =81 is a perfect square number just less than 89).Step 2: The divisor and the quotient need to be the same numbers; in this case, it is 9. Multiply the quotient and the divisor and subtract the result from 89.Step 3: For the next divisor, add the previous divisor with the quotient. (9 + 9 = 18); place it as the new divisor with a blank on its right.Step 4: Put a decimal after quotient “9” and bring down two zeros to place it after 8 so that it becomes 800. (184 × 4 = 736). Subtract 736 from 800.(800 − 736 = 64)Step 5: Bring down another pair of zeros and place it after 64, so that it becomes 6400. Take the new quotient 4 and add it to 184. (184 + 4 = 188)Step 6: Repeating the above steps, we need to fill the blank with a number such that when the new divisor is multiplied with the new quotient, the product is less than or equal to the dividend 6400. (1883 × 3 = 5649)Step 7: Write the same number after 4 in the quotient. Subtract 5649 from 6400. (6400 − 5649 = 751)Step 8: Repeat the process until we get the remainder equal to zero. The square root of 89 up to two places is obtained as 9.43 by the long division method.
Explore Square roots using illustrations and interactive examples
Use the hit and trial method while calculating the square root of any number.The square root of a number can have two values.The square root of any number can be assumed between the square root of two nearest perfect squares of that number. For example, the square root of 89 lies between the square root of 81 and 100. So value would be greater than 9 and less than 10.
Find the square root of 899 by the approximation method.Find the largest 5-digit number which is a perfect square.
Example 1 Kevin wants to paint the rectangular floor of his garage. The length of the floor is 10 feet and the width is √89 feet. Can you help him find the area of the floor that he has to paint?
Solution Given: Length of the rectangle floor = 10 feet and width of the rectangle floor = √89 feetArea of the floor = Length×WidthArea =10×√89 =10×9.43Area=94.3 feet2
Example 2 Help Tim evaluating √89 × √89.
We know that √89 = 9.43399.7339 × 9.4339 = 88.99 ≈ 89on multiplying √89 by √89 we get 89.
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