To find the circumference and area of a circle, you can use the following formulas:
-
Circumference (C) of a circle:
\[ C = 2 \pi r \] -
Area (A) of a circle:
\[ A = \pi r^2 \]
Given radius (r) = 38 feet and using \(\pi \approx 3.14\):
Calculating Circumference:
\[ C = 2 \times 3.14 \times 38 \]
\[ C = 6.28 \times 38 \]
\[ C = 238.64 \text{ feet} \]
Calculating Area:
\[ A = 3.14 \times (38^2) \]
First calculate \(38^2\):
\[ 38^2 = 1444 \]
Now calculate the area:
\[ A = 3.14 \times 1444 \]
\[ A = 4537.76 \text{ square feet} \]
Summary of results:
- Radius: 38 ft.
- Circumference: 238.64 ft.
- Area: 4537.76 ft²
Completed Table:
| Radius | Circumference | Area | |----------|---------------|------------| | 38 ft. | 238.64 ft. | 4537.76 ft² |