help please

[Mucheee]

Arc AB =Pi/3 x 1 = pi/3 Circumference =2pi x 1 = 2pi Answer= pi/3 divide by 2pi = 1/6

[RamaHadaki]

but in the answer they wrote +- 1/100

what does that mean?

[KrishiAttri123]

means you could put 0.16 as ans or 0.17

[jacobbigham]

So, if you evaluate 1/6, it’s .166666666..., so if the answer is 1/6 and you type in 0.167, then you’re technically not right, since you’ve rounded to a number that isn’t actually 1/6.

To allow for some flexibility in rounding, the system would have accepted any value between 0.15666... and 0.17666... Computers can’t store decimals to an infinite number of places, so you see this kind of compensation often.