2 would be the correct answer:)
Answer:
6
Step-by-step explanation:
The circumference of a circle is 
, so
. We can use this because the area of a circle is
. Thus,
.
Y=12x
Check: 72=12(6)
72=72
y=12x
y=12(10)
y=120
when x is 10 y is 120
7.B




9.A
3/2=1.5
8. F
2times pi =6.283
square root of 50= 7.071
pi squared/2= 3.289
10.H
1/7= .143
which means it can't be f or g.