If the circumference of a circle is 198 feet, then what is the area to the nearest square foot?(1 point)

Responses

3,120 ft.2
3,120 ft. squared

32 ft.2
32 ft. squared

99 ft.2
99 ft. squared

63 ft.2
63 ft. squared

1 answer

To find the area of the circle given its circumference, you can use the formulas for circumference and area. The circumference \( C \) of a circle is given by:

\[ C = 2\pi r \]

where \( r \) is the radius. The area \( A \) of a circle is given by:

\[ A = \pi r^2 \]

Given that the circumference is 198 feet, you can solve for the radius:

\[ 198 = 2\pi r \]

To find \( r \):

\[ r = \frac{198}{2\pi} = \frac{99}{\pi} \]

Now, we can substitute \( r \) into the area formula:

\[ A = \pi r^2 = \pi \left(\frac{99}{\pi}\right)^2 \]

Simplifying this:

\[ A = \pi \cdot \frac{9801}{\pi^2} = \frac{9801}{\pi} \]

Next, to calculate the area, we can use \( \pi \approx 3.14 \):

\[ A \approx \frac{9801}{3.14} \approx 3120.06 \]

Rounding to the nearest square foot, the area is approximately:

\[ 3120 , \text{ft}^2 \]

Therefore, the correct answer is:

3,120 ft.²