Mathematics · Mensuration
A solid metal cylinder of height 20 cm and diameter 14 cm is melted and recast into two solid cones having volumes in the ratio 3 : 4, keeping the height of each cone 35 cm. What is the percentage change in the total flat surface area (area of the circular bases) after recasting?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 19111% increase
- 22219% increase
- 31427% decrease✓
- 426113% decrease
Correct answer
1427% decrease
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