Question

Find the Circumference of each circle round your answer to the nearest tenth
circle = 7 ft
44 ft
49 ft
48.4 ft
16.6 ft

Answer 1

To find the circumference of a circle, you can use the formula:

\[
C = \pi \times d
\]

where \( C \) is the circumference and \( d \) is the diameter of the circle. You can also use the radius \( r \) in the formula:

\[
C = 2 \pi r
\]

Since you provided the diameters directly, we will use the first formula. Using \( \pi \approx 3.14 \), we can calculate the circumference for each circle.

1. **For a circle with diameter 7 ft:**
\[
C = \pi \times 7 \approx 3.14 \times 7 \approx 21.98 \text{ ft} \approx 22.0 \text{ ft}
\]

2. **For a circle with diameter 44 ft:**
\[
C = \pi \times 44 \approx 3.14 \times 44 \approx 138.16 \text{ ft} \approx 138.2 \text{ ft}
\]

3. **For a circle with diameter 49 ft:**
\[
C = \pi \times 49 \approx 3.14 \times 49 \approx 153.86 \text{ ft} \approx 153.9 \text{ ft}
\]

4. **For a circle with diameter 48.4 ft:**
\[
C = \pi \times 48.4 \approx 3.14 \times 48.4 \approx 152.34 \text{ ft} \approx 152.3 \text{ ft}
\]

5. **For a circle with diameter 16.6 ft:**
\[
C = \pi \times 16.6 \approx 3.14 \times 16.6 \approx 52.20 \text{ ft} \approx 52.2 \text{ ft}
\]

**Summary of Circumferences rounded to the nearest tenth:**
- Circle with diameter 7 ft: **22.0 ft**
- Circle with diameter 44 ft: **138.2 ft**
- Circle with diameter 49 ft: **153.9 ft**
- Circle with diameter 48.4 ft: **152.3 ft**
- Circle with diameter 16.6 ft: **52.2 ft**