Use the compass tool to draw a circle with a specific radius and colour, then use the Circle Information screen to calculate diameter, circumference, and area.

1. Drag the pencil left or right to change the radius of the circle. Alternatively, use the arrows or type in a specific value.

2. Drag the pencil up or down to change the colour of the circle.

3. Release, and the circle will be drawn. Click the “i” to show information about the circle.