Question

find two consecutive whole numbers that square root of 86 lies between

Answer 1

Some prefect squares are: \(\large\color{black}{ \displaystyle 49,~~~64,~~~81,~~100,~~~121}\)

Answer 2

some little hint.
does it help ?

Answer 3

I still don't understand what Im suppose to do?

Answer 4

For example,
`find two consecutive whole numbers that square root of 21 lies between`

you know that
\(\large\color{black}{ \displaystyle 4^2=16 }\)
\(\large\color{black}{ \displaystyle 5^2=25 }\)

that means that
\(\large\color{black}{ \displaystyle \sqrt{21} }\)
is somewhere between \(\large\color{black}{ \displaystyle \sqrt{16} }\) and \(\large\color{black}{ \displaystyle \sqrt{25} }\), and therefore your answer is that \(\large\color{black}{ \displaystyle \sqrt{21} }\) is between 3 and 4.