Question

pls answer fast I promise I mark u as brainliest ​

Answer 1

classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length. The name comes from the Latin radius, meaning ray but also the spoke of a chariot wheel.

Answer 2

Answer:

the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogues. ◉‿◉