To find the circumference and area of a circle, you can use the following formulas:
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Circumference \( C \) of a circle is given by: \[ C = 2\pi r \] where \( r \) is the radius.
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Area \( A \) of a circle is given by: \[ A = \pi r^2 \]
In this case, you mentioned "11 in", which I assume is the diameter of the circle. Therefore, the radius \( r \) will be half of the diameter:
\[ r = \frac{11 \text{ in}}{2} = 5.5 \text{ in} \]
Now we can calculate the circumference and area:
Circumference: \[ C = 2\pi (5.5) \approx 2 \times 3.14 \times 5.5 \approx 34.56 \text{ in} \]
Area: \[ A = \pi (5.5)^2 \approx 3.14 \times 30.25 \approx 94.25 \text{ in}^2 \]
Thus, the circumference of the circle is approximately \( 34.56 \text{ in} \), and the area is approximately \( 94.25 \text{ in}^2 \).