Final answer:
The geometric mean of the altitude can be found using the formula D = √(2Rxh), and in this case, it would be represented as √(x * y * z).
Step-by-step explanation:
To find the geometric mean of the altitude, you would use the formula D = √(2Rxh), where D is the altitude, R is a constant, and h is the altitude. In this case, the geometric mean would be represented as √(x*y*z), where x, y, and z are the altitudes of different objects. Therefore, the correct answer is option D: √(x * y * z).