22 in

Shape: Circle
Calculate the area of the circle.
Area of a circle: 3.14 x r²
A = [?]ft²
Round to the nearest hundredth.

1 answer

To calculate the area of a circle, we use the formula:

\[ A = \pi r^2 \]

Given that the diameter of the circle is 22 inches, we first need to find the radius (r). The radius is half of the diameter:

\[ r = \frac{22}{2} = 11 \text{ inches} \]

Now we can calculate the area using \( \pi \approx 3.14 \):

\[ A = 3.14 \times (11)^2 \]

Calculating \( (11)^2 \):

\[ 11^2 = 121 \]

Now substitute back into the area formula:

\[ A = 3.14 \times 121 \]

Calculating the area:

\[ A \approx 3.14 \times 121 = 380.94 \]

Therefore, the area of the circle is:

\[ A \approx 380.94 \text{ in}^2 \]

Rounding to the nearest hundredth, the final area is:

\[ \boxed{380.94 \text{ in}^2} \]