What's The square root of 27?

Answer 1

3(radical)3

Answer 2

All these answers given probably don't help you, because any calculator could give you the answer. If you can't use a calculator, however, what can you do?
1. First, 27 is not a perfect square (like 5x5= 25 so 25 is a perfect square)
2. If it is not a perfect square, then it is an irrational number. This means the actual answer goes on forever, and never repeats.
3. So any answer given is actually an estimate.
4. Hear is how to get a close estimate: Round down to the nearest perfect square (25 in this case). this means the answer will start with 5 point something. To get the next number in the tenth column, how much did you round down 27-25=2. move the decimal to the left on the 2 to get the final estimate of 5.2. Incidently, if you round up to the nearest perfect you subtract. For instance: square root of 48? Round up to 49 =7 48-49 =-1 so final estimate= 6.9

Answer 3

3

Answer 4

I'm going to guess that you didn't just use a calculator because you are supposed to extract the square (9) and state the answer in its simplest terms. 5.19.....is not simple nor precise. 3radical3 is most likely the answer your teacher wants. In general when solving this sort of problem, look at the number inside the radical or square root symbol, and figure out if one factor of that number is a square. Then take the square root of that number outside of the radical. If you can make another square root from the number left inside the radical, then you need to extract that root too and multiply it by the one on the outside. Do this until you have a number inside the radical which cannot be simplified any further.

Answer 5

3

Answer 6

5.19615242 or simplified 3 x the square root of 3

look in Google or a web searcher for stuff like the first answer -it pops right up
or look at http://www.webmath.com/..
for explanations similar to the following....
To find the square root of this expression...
27 is 9 times 3 ...
...and 9 can be written as 3 to the power 2.
So, the 9 can just be pulled outside of the radical sign, as a 3 ,
and the other factor, the 3 , just stays inside of the radical sign.

Answer 7

27= 9 x 3
sqrt of 27 = sqrt of (9 x 3)
= 3 x sqrt of 3
or = 3 x 1.732
= 5.196

memorize the ff:
sqrt of 1 = 1
sqrt of 2 = 1.414
sqrt of 3 = 1.732
sqrt of 4 = 2
sqrt of 5 = 2.236

that's all and then study how to make a factor tree next time.

Answer 8

3 times the square root of three.

Answer 9

5.1961524227066318805823390245176
and the cubed root of 27 is 3

Answer 10

its not a perfect square.u can use a calculator to find its square root approxiamtely or u can use long division method