To solve this worksheet, students need to substitute the given values of volume and height in the formula V = πr^2h. For example, if the height of a cone is 9 units and the volume of the cone is 75π cubic units, then the formula V = ⅓ πr^2h becomes 75π= ⅓ πr^2(9).

On further simplification, it becomes 75π= 3r^2π and after dividing both sides by 3π it becomes 25=r^2. Taking square root on both sides, ±5=r, but the radius cannot be negative. Therefore, the radius of the cone is 5 units.