The phrase "a large radius" is correct and usable in written English.
It can be used in contexts related to geometry, physics, or any situation where the size of a circle or sphere is being described.
Example: "The circular garden has a large radius, allowing for plenty of space for various plants and flowers."
Alternatives: "a wide radius" or "an extensive radius".
"A good highway network means people can come from a large radius".
Crude and indiscriminate, they explode on impact, destroying buildings and killing and maiming people over a large radius.
A high mass density will hasten the burn, and a large radius will slow the disassembly time.
The Royal Exchange in Manchester, one of the biggest theatres in Britain "in the round", draws audiences from a large radius who want to witness the staging experience.
Every time there is a serious explosion at a nuclear power plant people within a large radius of the site have to be evacuated for long periods of time, or indefinitely, as was the case with Chernobyl.
Uplifting as a result of fractures at great depths, of which the Kopet-Dag and ranges surrounding the Fergana Valley provide typical examples, and of folding over a large radius, examples of which may be seen in the Tien Shan and Gissar and Alay ranges, played a significant role.
The radius is, in any case, an arbitrary one; studies suggest that a larger radius would be more appropriate.
Low speed but high torque are characteristic of boring because the boring tool has a larger radius than a drill.
2.0: These players can move lean forward and rotate their body to some extent, allowing them to catch the ball within a larger radius.
The proposed changes included longer minimum lengths for skis for men and women in downhill, giant slalom and super-G events, along with a larger radius minimum.
When the mainspring was fully wound, the gut or chain pulled on the smallest radius of the cone-shaped fusee; as the mainspring ran down, the leverage was progressively increased as the gut or chain pulled on a larger radius.
