If the circumference of a circle is increased by 50%, what is the percentage increase in the diameter?
Category: Math · Difficulty: hard
Hint: Recall the relationship between circumference and diameter.
Answer
50
Explanation
The circumference is πd. If it increases by 50%, then (1.5)(πd) = π(new_diameter), leading to a new diameter that is also increased by 50%.
This is a hard math riddle — a tricky one that takes a little thought. The answer is 50.
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