Answer:
C
Step-by-step explanation:
area of circle is found by 

r=4 so 4*4=16
so A=16
we are finding area of shaded part so 45/360(16
)
I think it’s the first and last option I hope this helps
Answer:
4
Step-by-step explanation:
Answer:
x=3
Step-by-step explanation:
Answer:95139 units^2
Step-by-step explanation:
(31*31)*99 = 95139
So the answer should be 95139 units ^2