Find the square root of 81: sqrt(81)
The square root of 81 is 9.
To find the square root of 81, you can use the square root function or simplify it manually.
Using the square root function on most calculators, you can input sqrt(81), and the result will be 9.
To simplify it manually, you can try to find a perfect square that can divide 81. The perfect square that can divide 81 is 9, because 9 times 9 equals 81. So, the square root of 81 is 9.
To find the square root of 81, you can use a calculator or manually calculate it.
Using a calculator:
1. Type in the number 81.
2. Press the square root (√) button.
3. The calculator will display the square root of 81, which is 9.
Manually calculating the square root of 81:
1. Start by guessing a number that when squared, gets as close as possible to 81. In this case, the number 9 is a good guess because 9 squared is 81.
2. Divide 81 by 9: 81 ÷ 9 = 9.
3. Average the result with your guess: (9 + 9) ÷ 2 = 9.
4. Repeat steps 2 and 3 until you reach a more accurate answer. In this case, since we already have the exact answer, 9 is the square root of 81.
So, the square root of 81 is 9.