The volume of a sphere, $V$, is calculated using the formula $V = \dfrac{4}{3}πr^3$, where $r$ is the radius of the sphere.
**Rearrange the formula to solve for the radius $(r)$.**
$r=$ [[☃ expression 1]]
**What is the radius of a sphere with a volume of $100\text{ ft}^3$ ?**
*Round your answer, if necessary, to the nearest hundredth.*
$r = $ [[☃ numeric-input 1]] $\text{ft}$