Final answer:
The correct formula for calculating the volume of a right circular cylinder is V = πr²h, where V is volume, r is the radius, and h is the height.
Step-by-step explanation:
The question asks for the correct formula to calculate the volume of a right circular cylinder. In mathematics, particularly in geometry, the volume of a right circular cylinder is calculated using the formula V = πr²h, where V represents volume, r is the radius of the base of the cylinder, and h is the height of the cylinder. Therefore, the correct option from the given choices is 'a) r² * h' as it reflects the proper formula for calculating the volume of a cylinder. To emphasize, the volume of other shapes, such as a sphere is calculated using a different formula, 4/3 πr³, and should not be confused with that of a cylinder.