Can I construct sentences using the word radius like the following sentences?

[Jit833]

1) How much radius can the walkie-talkie cover?
2) The walkie-talkie work in how much radius the best?

[JMurray]

1) How much radius can the walkie-talkie cover?
2) The walkie-talkie work in how much radius the best?

1) Your example would be understood but I think the simpler
"What radius can the walkie-talkie cover?" is more natural.
or: "How wide a radius can the walkie-talkie cover?"
2) "Within what radius will the walkie-talkie work best?"

not a teacher

[SoothingDave]

Or simply "what's the working area/radius?"

[charliedeut]

Hi,

I feel "radius" to be too "Latin" for this context (I would understand it better if used in the context of a dicussion on Geometry, for instance). Why not simply ask about its span? Would that work?

[BobK]

Coverage?

b

[5jj]

I feel "radius" to be too "Latin" for this context (I would understand it better if used in the context of a dicussion on Geometry, for instance). Why not simply ask about its span? Would that work?

Span would not work, in my opinion. "What is the range of this walkie-talkie" would.

[SoothingDave]

Hi,

I feel "radius" to be too "Latin" for this context (I would understand it better if used in the context of a dicussion on Geometry, for instance). Why not simply ask about its span? Would that work?

"Radius" is quite normal when talking about a point source, like a radio. Radio station WXYZ can be heard anywhere within a 25 mile radius.

[charliedeut]

"Radius" is quite normal when talking about a point source, like a radio. Radio station WXYZ can be heard anywhere within a 25 mile radius.

However, the point of this thread is a walkie-talkie, which I'm not sure it is a "source point".

[SoothingDave]

What is a walkie-talkie other than a radio? A two-way radio. When it transmits it goes out equally to all directions.

[Barb_D]

I, too, find nothing odd about using "radius" this way, but you can say "range" if it makes you happier.