1 year, 3 months ago
What is the square root of 81?
You can leave an optional "tip" with Mahalo's virtual currency, Mahalo Dollars. If you are asking a difficult question that might require some research, or if you'd like a wide variety of feedback, a higher tip often leads to more answers to your question.
M$1 Answer
The square root of 81 is 9.
The square root of a number "x" is such that the number--"r"--times itself equals "x," or r x r = x. So the square root of 4 is 2, because 2 x 2 = 4. The square root of 9 is x, because 3 x 3 = 9, and so forth.
There's an explanation of how to calculate square roots without a calculator here: http://www.math.com/school/subject1/lessons/S1U1L9DP.html
The square root of a number "x" is such that the number--"r"--times itself equals "x," or r x r = x. So the square root of 4 is 2, because 2 x 2 = 4. The square root of 9 is x, because 3 x 3 = 9, and so forth.
There's an explanation of how to calculate square roots without a calculator here: http://www.math.com/school/subject1/lessons/S1U1L9DP.html
You can leave an optional "tip" with Mahalo's virtual currency, Mahalo Dollars. If you are asking a difficult question that might require some research, or if you'd like a wide variety of feedback, a higher tip often leads to more answers to your question.
M$Report Abuse
