Question

Please help me ASAP! Thanks :)

Answer 1

we are given

radius is 1

$r=1$

we have angle as

$\theta=\frac{\pi}{2}$

now, we can use arc length formula

$l=r*\theta$

where

l is arc length

theta is angle

now, we can plug value

$l=1*\frac{\pi}{2}$

so,

Exact form:

$l=\frac{\pi}{2}$............Answer

Decimal form:

$l=1.57$............Answer