Volume of Cylinder and Radius Calculation

Consider the expression for the volume of a cylinder, which is given by the formula:

$$ V = ext{base area} imes ext{height} $$

Where the base area is the area of a circle. The radius of the base circle is provided as $$ r $$, and can be expressed in terms of height $$ h $$ as follows:

$$ r =\frac{h}{2} $$

If the volume of the cylinder is set to 80 cubic units and its height is 10 units, find the value of the radius $$ r $$.