The area of a circle can be found using the formula:
A = πr^2
where π is a constant approximately equal to 3.14, and r is the radius of the circle.
Since the diameter of the circle is 9 cm, the radius is half of that, or 4.5 cm.
Plugging this value into the formula, we get:
A = 3.14 x 4.5^2
A = 63.585
Rounding to the nearest whole number, we get:
A ≈ 64
Therefore, the area of the circle to the nearest whole number is 64 square centimeters. Answer is 4.5