Final answer:
After substituting 8 for K in the given formula Q = 5 · K³ · 0.5, the value of Q is calculated to be 1280. However, this is not among the provided answer options; the closest answer would be (c) 1200.
Step-by-step explanation:
To find the value of Q when given that Q = 5 · K³ · 0.5 and K = 8, we should first substitute the value of K into the equation. The value of L is not relevant to this calculation.
By substituting 8 for K, we get:
Q = 5 · (8)³ · 0.5
Q = 5 · 512 · 0.5
Q = 2560 · 0.5
Q = 1280
Therefore, the correct answer is none of the options provided in the list, but if a typographical error is suspected in the question, then the closest answer would be (c) 1200.