Math Problem Statement

The circumference C of a circle is a function of its radius given by C(r)=2πr

a. Express the radius of a circle as a function of its circumference. Call this function r(C)

Enter the exact answer. Enclose numerators and denominators in parentheses. For example, (ab)/(1+n). r(C)=?

Solution

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Math Problem Analysis

Mathematical Concepts

Geometry
Functions
Algebra

Formulas

C(r) = 2πr
r(C) = C / (2π)

Theorems

Circumference of a Circle

Suitable Grade Level

Grades 9-10