Mathematics
NULL
Medium
Question
How many solid spheres of diameter 6 cm can be moulded to form a solid metal cylinder of height 45 cm and diameter 4 cm?
A
3
B
4
C
5
✓ Official correct answer
D
6
Community credibility
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A
3
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B
4
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C
5
No member explanations yet for this option.
D
6
No member explanations yet for this option.
Explanation
n × (4/3)π×3³ = π×2²×45 ⇒ n × 36 = 180 ⇒ n = 5.