a circle has an area of 324 pi feet squared. what is the circumference?
The area of a circle is pir^2 so 324/pi is 103 if you take the square root of that it is 10.15. so you would use the circumference formula now, which is 2 pi r so 2pi*10.15= 63.77
Answer:
Circumference of circle is 36π feet.
Step-by-step explanation:
Given : area of circle is 324π feet²
We have to find the circumference of the given circle.
Consider Area of circle is 324π feet²
We know, Area of circle = \(\pi r^2\)
Thus, \(324\pi=\pi r^2\)
Simplify for r , we have,
\(324=r^2\)
Taking square root both side, we have,
\(r=\sqrt{324}=18\)
Circumference of circle is given by \(2\pi r\)
Substitute, we get,
\(C=2\pi r\)
\(C=2\pi (18)=36\pi\)
Thus, Circumference of circle is 36π feet.