Answer:
-2z+8
Step-by-step explanation:

Answer:
Option C 
Step-by-step explanation:
we know that
The area of a circle is equal to

we have

substitute

Remember that
degrees subtends the complete area of the circle
so
by proportion
Find the area of the blue sector for an angle of
degrees


The answer is every long.
Step-by-step explanation:
as the figure shows