Answer:
The area of a circle can be found using the formula 
Step-by-step explanation:
Answer:

Step-by-step explanation:
step 1
Find the area of the circle
The area of the circle is

we have
----> the radius is half the diameter
substitute


step 2
Find the area of a sector
Remember that
The area of the circle subtends a central angle of 360 degrees
so
using proportion
Find out the area of a sector with a central angle of 108 degrees

assume

substitute

Answer:
y=1/2+x
1Beacuxse the negative is the postivw
Answer:Surface
Step-by-step explanation:
Answer:
the answer is b
Step-by-step explanation: