Question

In the expression $2\pi r$, the algebraic variable is ________.

Answer 1

Find the algebraic variable in the expression

The given expression is $2\mathrm{\pi r}$

In the expression $2,\mathrm{\pi }$ or $3.14$ are numerical values so they are constant and value of $r$ can vary .

So $r$is the algebraic variable .

Hence $r$ is the algebraic variable in the expression $2\mathrm{\pi r}$