To find the circumference and area of a circle, you can use the following formulas:
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Circumference (C): \[ C = 2 \pi r \]
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Area (A): \[ A = \pi r^2 \]
Given that the radius \( r = 279 \) inches and substituting \( \pi \) with 3.14, let's calculate:
Circumference
\[ C = 2 \times 3.14 \times 279 \]
Calculating step-by-step: \[ C = 6.28 \times 279 \] \[ C \approx 1755.12 , \text{inches} \]
Area
\[ A = 3.14 \times (279)^2 \]
Calculating \( 279^2 \): \[ 279^2 = 77841 \]
Now, substituting back into the area formula: \[ A = 3.14 \times 77841 \] \[ A \approx 244,600.34 , \text{inches squared} \]
Final Table
So, the completed table looks like this:
| Radius | Circumference | Area | |---------|------------------|---------------| | 279 in. | 1755.12 in. | 244,600.34 in²|