The radii of the circles are equal.

The hydraulic radii of the rivers in this region vary greatly.

The radii of curvature of the lenses determine the focal length of the camera.

The Schwarzschild radii of black holes determine their event horizons.

The binoculars have adjustable sight radii.

The electron cloud extends to several Bohr radii.

The radii vectores of the circle are equal in length.

The potato radii in this dish are perfectly cooked.

The radii of gyration for the molecules were calculated using molecular dynamics simulations.

The Debye radii of the ions in the solution determine the electrostatic interactions.