find the area of the given circle with a diameter of 12 feet. use "3.14" for pi. round to the nearest tenth.
A. 11.0 ft^2
B. 38.5 ft^2
C. 42.8 ft^2
D. 113.0 ft^2
First, we need to find the radius of the circle. The radius is half of the diameter, so it is 12 ft / 2 = 6 ft.
Next, we use the formula for the area of a circle: A = πr^2. Plugging in the values, we get A = 3.14 * 6^2 = 3.14 * 36 = 113.04 ft^2.
Rounded to the nearest tenth, the area of the circle is approximately 113.0 ft^2.
Therefore, the answer is D. 113.0 ft^2.