Answer:
The length of arc OP is 1/8 the circumference of the circle
Explanation:
step 1
Find the circumference of the circle L
The circumference is equal to

we have

substitute


step 2
Find the length of arc OP
we know that the circumference of the circle subtends a central angle of 360 degrees
so
using proportion
Find out the length of the arc OP by a central angle of 45 degrees
Let
x -----> the length of arc OP

therefore
The length of arc OP is 1/8 the circumference of the circle