Subtract 3 from both sides
-18 - 3 = x/3
Simplify -18 - 3 to -21
-21 = x/3
Multiply both sides by 3
-21 * 3 = x
Simplify -21 * 3 to -63
-63 = x
Switch sides
<u>x = -63</u>
The formula to find the circumference of a circle is C=2*pi*r.
Substitute 9 1/4 or 9.25 for r.
C=2*pi*r
C=2*pi*9.25
C=18.5pi
The circumference of the circle would be 18.5pi.
Answer: 49/30 or, 1 19/30
