what is the radius of a circle with a circumference of 190?

So we have

Circumference = 2 * pi * radius

190 = 2 * pi * r   And solving for "r," we have

r = 190 / (2 * pi) =  95 / pi   ≈   30.2 units

$$\\circumference=190\\
circumference = 2\pi*radius\quad|\quad:2\pi\\
\frac{circumference}{2\pi}=radius\\
\frac{190}{2\pi}=radius\\$$

$${\mathtt{radius}} = {\frac{{\mathtt{190}}}{\left({\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{\pi}}\right)}} \Rightarrow {\mathtt{radius}} = {\mathtt{30.239\: \!439\: \!187\: \!460\: \!113\: \!8}}$$

The radius is 30.239 units

Sorry, heureka.......we were posting at the same time.......but we both arrived at  ≈ the same place !!

Thumbs Up from me.......and a green check mark !!