Question

find the real - number root using a calculator. round your answer to the nearest thousandth. (sqrt{494})

Explanation:

Step1: Calculate square root of 494

$\sqrt{494} \approx 22.22611077$

Step2: Round to nearest thousandth

Look at the 4th decimal digit (1), which is less than 5, so we keep the 3rd decimal digit unchanged.

Answer:

22.226