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
Problem 1CT
Related questions
Question
![```markdown
### Mathematics - Geometry
#### Find the Perimeter and the Area of the Figure
**Instructions**:
Calculate the perimeter and the area of the given figure. Provide your answers in terms of π (pi) and to the nearest tenth where applicable.
**Figure 7 Description**:
- A half-circle (semicircle) with a radius of 12 miles.
#### Table for Calculation
| | Perimeter | Area |
|---|-----------|------|
| 7 | | |
**Steps for Calculation**:
1. **Perimeter of the Semicircle**:
- The perimeter of a semicircle includes the curved part plus the diameter.
- The formula for the perimeter of a semicircle is:
\[ P = \pi r + 2r \]
where \( r \) is the radius.
- Given: \( r = 12 \) miles.
2. **Area of the Semicircle**:
- The formula for the area of a semicircle is:
\[ A = \frac{1}{2} \pi r^2 \]
where \( r \) is the radius.
- Given: \( r = 12 \) miles.
#### Example Calculation:
- Using the provided radius, apply the aforementioned formulas to find the perimeter and area.
---
This exercise aims to help students practice calculating the perimeter and area of a semicircle, reinforcing their understanding of geometry formulas.
```
This text and table are designed to aid students in calculating the perimeter and area of a semicircle, explaining the steps and providing the necessary formulas.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F046d8025-90a9-4a04-83c7-1211a0a4be33%2F829bb072-855f-48a4-8be4-34247f4ffdb9%2Fhwhaex_processed.png&w=3840&q=75)
Transcribed Image Text:```markdown
### Mathematics - Geometry
#### Find the Perimeter and the Area of the Figure
**Instructions**:
Calculate the perimeter and the area of the given figure. Provide your answers in terms of π (pi) and to the nearest tenth where applicable.
**Figure 7 Description**:
- A half-circle (semicircle) with a radius of 12 miles.
#### Table for Calculation
| | Perimeter | Area |
|---|-----------|------|
| 7 | | |
**Steps for Calculation**:
1. **Perimeter of the Semicircle**:
- The perimeter of a semicircle includes the curved part plus the diameter.
- The formula for the perimeter of a semicircle is:
\[ P = \pi r + 2r \]
where \( r \) is the radius.
- Given: \( r = 12 \) miles.
2. **Area of the Semicircle**:
- The formula for the area of a semicircle is:
\[ A = \frac{1}{2} \pi r^2 \]
where \( r \) is the radius.
- Given: \( r = 12 \) miles.
#### Example Calculation:
- Using the provided radius, apply the aforementioned formulas to find the perimeter and area.
---
This exercise aims to help students practice calculating the perimeter and area of a semicircle, reinforcing their understanding of geometry formulas.
```
This text and table are designed to aid students in calculating the perimeter and area of a semicircle, explaining the steps and providing the necessary formulas.
![### Geometry Problems
The top of a glass coffee table is a circle. The circumference is 15.7 feet.
**Problem 8:**
What is the radius of the table?
**Problem 9:**
What is the area of the table?
**Problem 10:**
The 1893 World’s Fair in Chicago boasted the first ever Ferris wheel with a diameter of 250 feet. How far did a person travel in one revolution of the wheel?
**Problem 11:**
The circumference of a circular pool is about 28 feet. What is the approximate diameter of the pool?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F046d8025-90a9-4a04-83c7-1211a0a4be33%2F829bb072-855f-48a4-8be4-34247f4ffdb9%2Fumdpnlk_processed.png&w=3840&q=75)
Transcribed Image Text:### Geometry Problems
The top of a glass coffee table is a circle. The circumference is 15.7 feet.
**Problem 8:**
What is the radius of the table?
**Problem 9:**
What is the area of the table?
**Problem 10:**
The 1893 World’s Fair in Chicago boasted the first ever Ferris wheel with a diameter of 250 feet. How far did a person travel in one revolution of the wheel?
**Problem 11:**
The circumference of a circular pool is about 28 feet. What is the approximate diameter of the pool?
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