Circumference formula tells you [tex]C=2 \pi r[/tex]
[tex]C=2 \pi r[/tex]
[tex]138.16=2 \pi r[/tex]
[tex]21.99= r[/tex]
[tex]r=21.99cm[/tex]
The formula to find the area of a circle is [tex]A= \pi r^2[/tex]
[tex]A= \pi r^2[/tex]
[tex]A= \pi (21.99)^2[/tex]
[tex]A= \pi (483.56)[/tex]
[tex]A= 1519cm^2 [/tex]
