Difficulty: Medium
Correct Answer: 2541
Explanation:
Introduction / Context:
Volume is conserved in melting/recasting. We divide the cube’s volume by the volume of one sphere (bullet) to get the count. The standard approximation π = 22/7 is commonly used in such problems for an exact integer result.
Given Data / Assumptions:
Concept / Approach:
n = V_cube / V_sphere; compute carefully to preserve integer results with π = 22/7.
Step-by-Step Solution:
Verification / Alternative check:
Reduce 85184/704 = 121 exactly; integer multiplication by 21 yields 2541.
Why Other Options Are Wrong:
Near misses result from rounding π or arithmetic slips; only 2541 is exact with 22/7.
Common Pitfalls:
Using π ≈ 3.14 leads to a non-integer; forgetting radius is half the diameter.
Final Answer:
2541
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