Answer:
28.26
Explanation:
The circumference of a circle is the distance around the edge of the circle. To find the circumference, we use the formula C = 2πr. The area of the circle is the amount inside the circle and is found using A = πr². Substitute the relevant values in each situation into the formulas to find the circumference and/or area.
Substitute C = 18.84 and solve for r. Then substitute r into the area formula.
C = 2πr
18.84 = 2πr
3 = r
A = πr² = π(3)² = 28.26