Area of a circle = \( \pi r^2 \), where r is the radius.<br><br>
&bull; Diameter = 6 cm, so radius = 6 ÷ 2 = 3 cm<br>
&bull; Area = \( \pi \times 3^2 = \pi \times 9 = 9\pi \)<br><br>
Final Answer: 9