What is the decimal equivalent of 17/64 millimeters?

To find the decimal equivalent of the fraction 17/64 millimeters, you perform the division of 17 by 64. This division calculates how many 64s fit into 17, expressed in decimal form.

When you divide 17 by 64, the result is approximately 0.265625. Rounding this value can give different results depending on how many decimal places you wish to consider. If you round to four decimal places, it results in 0.2656, which matches the choice given.

This computation shows how to convert a fraction into a decimal, and rounding is a common practice in measurement to maintain practical significance without losing precision unnecessarily. The other options may arise from rounding differently or inaccuracies in calculation, but the determination to round to four decimal places leads to the value of 0.2656 mm.