Practice Circles in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
The set of all points in a plane at a fixed distance (the radius) from a central point called the center.
Spin around with your arm fully outstretchedβyour fingertip traces a perfect circle.
Example 1
easyA circle has a radius of 7 cm. Find its diameter and state the relationship between the radius and the diameter.
Example 2
mediumA chord of a circle is 24 cm long and is 5 cm from the centre. Find the radius of the circle.
Example 3
easyA circle has a diameter of 20 cm. What is its radius?
Example 4
easyTwo radii and one chord form a triangle inside a circle. If the radius is 10 cm and the triangle's perimeter is 34 cm, find the chord length.