The ratio of the diameter and height of the right circular cylinder is 4 : 3. If the diameter of the cylinder is reduced 25 %, then its total surface area is reduced to 318.5π m². What is the circumference of the base of the cylinder?
Held on 3 Jun 2025 · Verified 13 Jul 2026.
7π m²
14π m²
25π m²
28π m²
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