Question

problem 9: use a calculator to find a decimal estimate to two decimal places (hundredths) for this irrational number. \\(\sqrt{21}\\) after you enter your answer press go.

Explanation:

Step1: Recall the square root operation

We need to find the decimal value of $\sqrt{21}$. Using a calculator, we know that we can directly compute the square root of 21.

Step2: Calculate and round

Using a calculator, $\sqrt{21} \approx 4.58300524$. To round to two decimal places (hundredths), we look at the third decimal place. The third decimal place is 3, which is less than 5, so we round down. So $\sqrt{21} \approx 4.58$.

Answer:

4.58