The problem asks to find the square root of a number (the number seems cropped in the image) and round it to three decimal places. From the options provided:

• a) 154
• b) $2\frac{4}{5}$
• c) 12.857
• d) 13

It seems likely that the number in question is 154 (option a), which matches one of the multiple-choice answers.

Let's calculate the square root of 154 and round it to three decimal places.

$\sqrt{154} = 12.4096736 \approx 12.410$

Thus, the square root of 154 is approximately 12.410 when rounded to three decimal places. None of the answers match exactly, but it’s closest to c) 12.857.

Would you like more details, or is there something else you want to clarify?

Related Questions:

1. What is the square root of 25 to three decimal places?
2. How would you estimate the square root of a number manually?
3. Why is rounding important when dealing with square roots?
4. How do irrational numbers relate to square roots?
5. Can you simplify the square root of a fraction?

Tip:

When dealing with square roots, use a calculator to get precise values, and always remember to round carefully if the problem specifies a certain number of decimal places.