Find the square root of 0.81.
The square root of 0.81 is 0.9.
To find the square root of 0.81, follow these steps:
Step 1: Begin by writing down the number 0.81.
Step 2: Estimate the square root. Since 0.81 is close to 1, the estimated square root is also close to 1.
Step 3: Take an initial guess. Let's start with 0.9.
Step 4: Square the initial guess to check if it is close to 0.81. Since 0.9 squared is 0.81, our initial guess is correct.
Step 5: If the initial guess is not close, adjust it up or down as needed. In this case, our initial guess is already correct, so we don't need to adjust it.
Step 6: Therefore, the square root of 0.81 is equal to 0.9.
To find the square root of 0.81, you can use a calculator or apply the mathematical concept of square roots.
Using a calculator:
1. Enter 0.81 into the calculator.
2. Look for the square root (sqrt) function on your calculator. It might be represented as √ or by a square root symbol.
3. Press the sqrt button or key.
4. The calculator will display the square root of 0.81, which is 0.9.
Using the mathematical concept:
1. Rewrite 0.81 as a fraction: 0.81 = 81/100.
2. Take the square root of both the numerator and the denominator separately.
- Square root of 81: √(81) = 9.
- Square root of 100: √(100) = 10.
3. Simplify the square roots: 9/10.
- The square root of 81 is 9.
- The square root of 100 is 10.
4. Thus, the square root of 0.81 is 9/10 or 0.9.