Navigation:  Menu and toolbars > Query menu > Radius measure

Radius measure

The Radius measure tool remains active for measuring radial distances until another tool is activated.

 

Tap / Left click: adds vertex (center point and end point of the radius) on the map at the tapped location then opens the Geometry panel.

Drag:  draws circle on the map at the tapped locations with displayed crosshairs then creates the feature.