# Lesson Worksheet: Circles and Circumference Mathematics

In this worksheet, we will practice identifying and using parts of a circle and its circumference to solve problems.

**Q1: **

The length of the radius of a circle is the length of its diameter.

- Ahalf
- Bequal to
- Ctwice

**Q2: **

If the diameters of the two given circles, with centers and , are 2 cm and 6 cm, respectively, determine the length of .

**Q3: **

Identify all the radii in the following circle:

- A
- B
- C

**Q4: **

Which segment in this circle is a chord?

- A
- B
- C

**Q5: **

If the length of the longest chord in a circle is 310 m, what is its radius?

**Q6: **

Find the length of .

**Q7: **

Determine the diameter of the circle , given that its radius .

**Q8: **

Given that , find the radius to the circle .

**Q9: **

If the two circles have the same center, , and the lengths of their radii are 21 cm and 66 cm, find the length of .

**Q10: **

The diameter of the circle with center is 23, and . Find the length of .