"Volume and Surface Area of Sphere
'<hr /><div style = "max-width:100mm"><img style="height:60pt;" class="side" alt="sphere.png" src = "https://calcpad.eu/media/math/volume/sphere.png"></div>
'Radius
r = ?
'Volume
V = 4/3*π*r^3
'Surface area
S = 4*π*r^2
'1