Last updated on May 26th, 2025
If a number is multiplied by the same number, the result is a square. The inverse of the square is a square root. The square root is used in fields like vehicle design, finance, etc. Here, we will discuss the square root of 49/64.
The square root is the inverse of the square of the number. 49/64 is a perfect square fraction. The square root of 49/64 is expressed in both radical and exponential form. In radical form, it is expressed as √(49/64), whereas (49/64)^(1/2) in exponential form. √(49/64) = 7/8, which is a rational number because it can be expressed in the form of p/q, where p and q are integers and q ≠ 0.
The prime factorization method works well for perfect square numbers, including fractions. Let's discuss the methods commonly used to find square roots:
The product of prime factors is the prime factorization of a number. Now let us look at how 49/64 is broken down into its prime factors.
Step 1: Finding the prime factors of 49 and 64 49 can be factored as 7 x 7 64 can be factored as 2 x 2 x 2 x 2 x 2 x 2
Step 2: Since 49 and 64 are both perfect squares, the square root can be directly obtained by taking the square root of the numerator and the denominator separately. √(49/64) = √49 / √64 = 7/8
The long division method is useful for non-perfect square numbers but can also verify perfect squares. Here is how to find the square root using the long division method, step by step:
Step 1: Write the number 49/64 in decimal form, which is 0.765625.
Step 2: Start by grouping digits in pairs from right to left in the decimal.
Step 3: Find the largest integer whose square is less than or equal to the first group. Here, the first group is 0.76, and 0.8 works because 0.8 x 0.8 = 0.64.
Step 4: Subtract, bring down the next group, and repeat the process for each pair.
Step 5: Continue the process until you reach an accurate value. For 0.765625, the square root is exactly 0.875, which confirms our previous result.
Approximation method is another method for finding square roots and is useful for non-perfect squares. However, for fractions like 49/64, we can directly find an exact result:
Step 1: Identify closest perfect squares for the numerator and the denominator.
Step 2: Since 49 and 64 are perfect squares, this method confirms that √49 = 7 and √64 = 8. Thus, √(49/64) = 7/8, which is an exact result.
Students do make mistakes while finding the square root, such as forgetting about the negative square root or misapplying methods. Let us look at a few of those mistakes in detail.
Can you help Max find the area of a square box if its side length is given as √(49/64)?
The area of the square is 49/64 square units.
The area of the square = side².
The side length is given as √(49/64).
Area of the square = (√(49/64))² = 49/64.
A square-shaped building measuring 1 square foot is built; if each of the sides is √(49/64), what will be the square feet of half of the building?
0.5 square feet
We can divide the given area by 2 as the building is square-shaped.
Dividing 1 by 2 = 0.5.
So half of the building measures 0.5 square feet.
Calculate √(49/64) x 5.
4.375
The first step is to find the square root of 49/64, which is 7/8.
The second step is to multiply 7/8 with 5.
So 7/8 x 5 = 4.375.
What will be the square root of (49/64 + 15/64)?
The square root is 1.
To find the square root, we need to find the sum of (49/64 + 15/64). 49/64 + 15/64 = 64/64 = 1, and then √1 = 1.
Find the perimeter of the rectangle if its length ‘l’ is √(49/64) units and the width ‘w’ is 5 units.
We find the perimeter of the rectangle as 10.75 units.
Perimeter of the rectangle = 2 × (length + width).
Perimeter = 2 × (7/8 + 5) = 2 × (0.875 + 5) = 2 × 5.875 = 11.75 units.
Jaskaran Singh Saluja is a math wizard with nearly three years of experience as a math teacher. His expertise is in algebra, so he can make algebra classes interesting by turning tricky equations into simple puzzles.
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