Question

9 find the area of the circle if the circumference 18.84 units.

Explanation:

Step1: Solve for radius from circumference

Circumference formula: $C = 2\pi r$. Rearrange to solve for $r$:
$r = \frac{C}{2\pi}$
Substitute $C=18.84$, use $\pi=3.14$:
$r = \frac{18.84}{2\times3.14} = 3$ units

Step2: Calculate circle area

Area formula: $A = \pi r^2$
Substitute $r=3$, $\pi=3.14$:
$A = 3.14\times3^2$

Answer:

28.26 square units