Respuesta :
Nolan did not make an error while estimating the square root of number 18 and his all the steps are correct.
What is a square root?
A real square root of a number is the value which is when multiplicand by itself gives the same value as the number posses.
Nolan used the following procedure to find an estimate for
[tex]\sqrt{18}[/tex]
- Step 1:
The square of the number 4 is,
[tex]4^2=16[/tex]
The square of the number 5 is,
[tex]5^2=25[/tex]
Number 18 lies between these number as,
[tex]16 < 18 < 25[/tex]
Therefore, the [tex]\sqrt{18}[/tex] is somewhere between the number 4 and 5.
- Step 2:
Since 18 is closer to 16, square the tenths closer to 4.
[tex]{4. 1 }^2= 16. 81\\{4. 2 }^2= 17.64\\{4. 3}^2= 18.49\\{4. 4}^2= 19.36\\[/tex]
This step is also correct, when squaring.
- Step 3:
Since 18.49 rounds to 18, 4.3 is the best approximation for [tex]\sqrt{18}[/tex].
All the above steps are correct.
Thus, Nolan did not make an error while estimating the square root of number 18 and his all the steps are correct.
Learn more about the square root here;
https://brainly.com/question/664132
Answer:
The answer is C: In step 3, he should have determined which square is closest to 18.
