The correct answer is 10/7 or 1 3/7. Hope this helps.
Answer:
○ 
Step-by-step explanation:

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Answer:
d
Step-by-step explanation:
sqaure root of both times each other gives 5
Answer:
9pi
Step-by-step explanation:
circumference= 2 (pi) (r)
radius = diameter \ 2
r = 9 \ 2 = 4.5in.
c = 2 (pi) (4.5)
c = 9pi or 28.3in.
Hope this helps!
Answer:

Step-by-step explanation:
x=140°
m || n