Let's calculate each of the required values step by step.
Given:
- Radius (r) of the top circle = 18 ft
1. Diameter of the top Circle:
Diameter equation: \[ \text{Diameter} = 2 \times \text{Radius} \] Substituting the value of the radius: \[ \text{Diameter} = 2 \times 18 \text{ ft} = 36 \text{ ft} \]
2. Area of the top Circle:
Area equation: \[ \text{Area} = \pi \times r^2 \] Substituting the value of the radius: \[ \text{Area} = \pi \times (18 \text{ ft})^2 = \pi \times 324 \text{ ft}^2 \approx 1017.88 \text{ ft}^2 \quad (\text{using } \pi \approx 3.14) \]
3. Circumference of the top Circle:
Circumference equation: \[ \text{Circumference} = 2 \times \pi \times r \] Substituting the value of the radius: \[ \text{Circumference} = 2 \times \pi \times 18 \text{ ft} = 36\pi \text{ ft} \approx 113.10 \text{ ft} \quad (\text{using } \pi \approx 3.14) \]
Summary of Results:
- Diameter: 36 ft
- Area: Approximately 1017.88 ft²
- Circumference: Approximately 113.10 ft
Let me know if you need any further information!