College Math Placement Practice Test 2025 – Comprehensive All-in-One Guide for Exam Success!

Question: 1 / 400

What is the area of a circle with a radius of 3?

6π

9π

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 $.

12π

15π

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