Answer:
m= 11.4
Step-by-step explanation:
13.5= m+2.1
Subtract 2.1 to both sides
13.5= m+2.1
-2.1 -2.1
11.4= m
It helps you narrow down to a smaller answer for example there is pi, (3.14159265359) and there is more and more to that number. It is now estimated to 3.14 because it would be almost impossible to work with pi if it wasn't estimated
The question is asking for the sector arc length WZ,which can be find through the sector formula:

Since both cz and wz are the radius, they have the same length
cz=wz=5 in.
In this case,
2丌(5)× 122°/360°
=10丌×61/180
=61/36 ×丌
≈5.32in.
Thus 5.32in. is the answer.
Hope it helps!
2/9=2.50
Allowence=2.50x9 divided by which gives you an answer of 11.25
Hope this helps you!