9. Find the diameter of a circle with a circumference of 65.97 meters.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
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9.
**Mathematical Problem: Finding the Diameter of a Circle**

**Problem Statement:**
Find the diameter of a circle with a circumference of 65.97 meters.

**Explanation:**

Given the circumference \( C \) of a circle, the formula to find the diameter \( D \) is derived from the relationship between circumference and diameter. The formula for circumference is:
\[ C = \pi \times D \]

Where:
- \( C \) is the circumference
- \( \pi \) (pi) is approximately 3.14159
- \( D \) is the diameter

To find the diameter, we rearrange the formula to solve for \( D \):
\[ D = \frac{C}{\pi} \]

Substitute the given circumference into the formula:
\[ D = \frac{65.97}{\pi} \]

Using \(\pi \approx 3.14159\):
\[ D = \frac{65.97}{3.14159} \]

Perform the division:
\[ D \approx 21 \text{ meters} \]

Therefore, the diameter of the circle is approximately 21 meters.
Transcribed Image Text:**Mathematical Problem: Finding the Diameter of a Circle** **Problem Statement:** Find the diameter of a circle with a circumference of 65.97 meters. **Explanation:** Given the circumference \( C \) of a circle, the formula to find the diameter \( D \) is derived from the relationship between circumference and diameter. The formula for circumference is: \[ C = \pi \times D \] Where: - \( C \) is the circumference - \( \pi \) (pi) is approximately 3.14159 - \( D \) is the diameter To find the diameter, we rearrange the formula to solve for \( D \): \[ D = \frac{C}{\pi} \] Substitute the given circumference into the formula: \[ D = \frac{65.97}{\pi} \] Using \(\pi \approx 3.14159\): \[ D = \frac{65.97}{3.14159} \] Perform the division: \[ D \approx 21 \text{ meters} \] Therefore, the diameter of the circle is approximately 21 meters.
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