What is 5.64173228347066 inches simplified?

Answer 1

Depends how accurate you want your measurement:

The number looks like the result of a calculation, so to simplify it, round it to an appropriate number of significant figures: the number being dependant upon what you are measuring and how you measured it - ie what kind of accuracy you used to measure whatever it was in the first place.

reasonable simplifications would be:

• 6 inches (to the nearest inch)
• 5.6 in (to 1 dp/2 sig fig)
• 5.64 in (to 2 dp/3 sig fig)
• 5.642 in (to nearest thou/mil/3 dp/4 sig fig).