Step-by-step explanation:An expression containing variables, numbers, and operation symbols is called an algebraic expression. is an example of an algebraic expression. Each expression is made up of terms. A term can be a signed number, a variable, or a constant multiplied by a variable or variables.
The circumference of a circle is C = 2<span>πr Given C = 36</span><span>π, we can solve for the radius r: r = C/2</span>π = 36π/2<span>π = 36/2 = 18 cm (ANSWER) </span>
