To find the circumference and area of a circle with a radius of 279 inches using \( \pi \approx 3.14 \), we can use the following formulas:
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Circumference (C): \[ C = 2 \pi r \] where \( r \) is the radius.
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Area (A): \[ A = \pi r^2 \]
Now, substituting \( r = 279 \) inches and \( \pi = 3.14 \):
Step 1: Calculate the Circumference
\[ C = 2 \times 3.14 \times 279 \] \[ C = 6.28 \times 279 \] \[ C = 1757.72 \text{ in.} \]
Step 2: Calculate the Area
\[ A = 3.14 \times (279)^2 \] First, calculate \( 279^2 \): \[ 279^2 = 77841 \] Now substitute: \[ A = 3.14 \times 77841 \] \[ A = 244832.94 \text{ in.}^2 \]
Final Results
Now, we can complete the table with the calculated values:
| Radius | Circumference | Area | |----------------|---------------|---------------| | 279 in. | 1757.72 in. | 244832.94 in.^2|
So, the completed table is:
- Radius: 279 in.
- Circumference: 1757.72 in.
- Area: 244832.94 in.^2