Solve for the circumference of each circle and fill in the

radius and diameter below the circle. (Not drawn to scale)

## Circumference of the Circle

The circumference of the circle is the measurement of the boundary of the circle. It is also referred to as the perimeter of the circle. To calculate the circumference of the circle, we can use either the radius or the diameter of the circle. Using the radius, it can be derived by C = π2r. While using the diameter, it can be derived by C = πd.

### Answers:

- Radius: 5in Diameter: 10in Circumference: 31.4in
- Radius: 18ft Diameter: 36ft Circumference: 113.04ft
- Radius: 25cm Diameter: 50cm Circumference: 157cm
- Radius: 10m Diameter: 20m Circumference: 62.8m
- Radius: 49cm Diameter: 98cm Circumference: 307.72cm

### Solutions:

1. Given: r = 5in

d = 2r = 2(5in) = 10in

C = πd = (3.14)(5in) = 31.4in

2. Given: r = 18ft

d = 2r = 2(18ft) = 36ft

C = πd = (3.14)(36ft) = 113.04ft

3. Given: r = 25cm

d = 2r = 2(25cm) = 50cm

C = πd = (3.14)(50cm) = 157cm

4. Given: r = 10m

d = 2r = 2(10m) = 20m

C = πd = (3.14)(20m) = 62.8m

5. Given: r = 49cm

d = 2r = 2(49cm) = 98cm

C = πd = (3.14)(98cm) = 307.72

What is circumference: brainly.ph/question/13252352

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