Final answer:
The error in the provided explanation for calculating the volume of a sphere is in using 'square' of its radius; the correct term is 'cube'. The volume formula is ⅓πr³.
Step-by-step explanation:
The incorrect explanation for finding the volume of a sphere would involve using the square of its radius when it should in fact be using the cube of its radius. The correct formula for calculating the volume of a sphere is to multiply four-thirds by pi and the cube of its radius (not the square). Therefore, the volume of a sphere is given by 4/3 π r³, where π represents Pi (approximately 3.14159), and r is the radius of the sphere. The error in the explanation is that 'square' should be replaced with 'cube' when referring to the radius.