CHALLENGE

ACTIVITY

$2\mathrm{.}7\mathrm{.}1$: Python expressions.

$547726\mathrm{.}3512336$ qx $xz$ zqy $7$

The volume of a sphere is calculated using the formula Volume $=\frac{4}{3}**(r^3)**,$ where $r$ is the sphere's radius.

Given variable sphere$\_$radius read from input and constant $\frac{?}{PI},$ compute the volume of a sphere and assign sphere$\_$volume with the volume.

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$\frac{?}{PI}=3\mathrm{.}14159$

sphere$\_$radius $=$ float input $()$