Answer:
[tex]6\pi[/tex] in
Step-by-step explanation:
The formula to find the area of a circle: [tex]\pi r^{2}[/tex], where [tex]r[/tex] is the radius.
The formula to find the circumference (perimeter) of a circle: [tex]2\pi r[/tex], where [tex]r[/tex] is the radius.
1) To find the circumference of the circle, we need to find the radius ([tex]r[/tex]) first. Since the area of the circle is given to us, we need to equate this to the formula to find the area of a circle.
[tex]9\pi =\pi r^2[/tex]
Cancel the [tex]\pi[/tex] by bringing it to the other side.
[tex]9 =\pi r^2[/tex] ÷ [tex]\pi[/tex]
[tex]9 = r^2\\\sqrt{9} = r\\3 = r[/tex]
2) Find the circumference of the circle by using the formula, [tex]2\pi r[/tex].
= [tex]2*\pi *3[/tex]
= [tex]6\pi[/tex] in
