What is the radius of a circle

The radius is the measure from the outside of a circle, to the center point in the middle of the circle.

Hope this helps, I added a picture of what a radius looks like...  :)

step-by-step explanation:

if x = 2 you have to find x to finish the problem

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this