College Math Placement Practice Test

To find the area of a circle, you can use the formula: \[ \text{Area} = \pi r^2 \] where \( r \) is the radius of the circle. In this case, the radius given is 3. Plugging this value into the formula: \[ \text{Area} = \pi (3)^2 \] Calculating further: \[ \text{Area} = \pi \times 9 = 9\pi \] Thus, the area of the circle is \( 9\pi \). This is why the correct answer is \( 9\pi \).