Respuesta :

Answer:

1 one

Step-by-step explanation:

L=1/8*2*22/7*4

=22/7

=π m

The measure of length of OB is 4m and the angle of O is 45 degrees. The exact length of AB will be π m.

What are angle bisectors?

Angle bisectors are lines that bisect the considered angle. Bisect refers to splitting into two equal parts.

Therefore, the bisected parts of the considered angle are half of the original angle.

The measure of length of OB is 4m and the angle of O is 45 degrees.

The exact length of AB

[tex]L = 1/8 \times 2\times\dfrac{22}{7}\times4\\\\= 22/7\\\\=\pi m[/tex]

Learn more about bisector;

https://brainly.com/question/12896755

#SPJ2