what is the square root of 16?

Answer 1

√16 = 4

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Answer 2

The "square" root is a number such that; when multiplied by itself, will give the answer: x*x

The square root of 16 can be 4 (because 4*4 = 16) and it can be -4 (because (-4)*(-4) = 16).

A "cube" root is one where the number needs to be multiplied three times, as in x*x*x

A "fourth" root, a number that is multiplied 4 times: x*x*x*x

The fourth root of 16 can be 2 (because 2*2*2*2 = 16) and it can be -2 (because (-2)*(-2)*(-2)*(-2) = 16).

Because 16 has an integer as its square root, 16 is said to be a "perfect square".

If you "square" (verb) 4, you get 16. 4 "squared" equals 16.

Anything that is multiplied by itself is said to be "squared".

If you have a room measuring 5 m by 6 m, the area is (5 m)* (6 m) = 5*6 m*m = thirty square metres. = 30 m^2

(where ^2 represents 2 as an exponent to the unit m)

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When the "square root" is used as a function, then it must only allow one answer (otherwise, it is not a function). In such cases, mathematicians will almost always use the positive root:
The square root of 16 is +4.

There has to be a very special reason to define the square root of 16 as -4 (However, if you are working on a problem where you must do that, then it is allowed).

Answer 3

√16 = ± 4

Answer 4

4

Answer 5

Square root of 16 is 4
as 4*4 is 16

Answer 6

3

Answer 7

4.

HOWEVER...
Be careful when working on equations. You can't just "take the square root of both sides" and assume everything going to work out.

If you get to the equation a^2 = 16, a could be either 4 or -4.

Answer 8

4.
coz 4*4=16

Answer 9

just think, "what number multiplied by itself equals 16"

so, 4 times 4 = 16

therefore the anwser is 4

Answer 10

4
b/c 4x4=16