Mathematics · Mensuration
If the height of a solid cylinder is increased by 25% and the radius of its base is decreased by 25%, by what percent will its curved surface area decrease? Also, if the radius of the original cylinder is 7 cm and the height is 20 cm, find the total surface area of the new cylinder. (Use π = 227)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15.90% and 979.60 cm2
- 25.55% and 1000.5 cm2
- 36.25% and 998.25 cm2✓
- 47.20% and 950.75 cm2
Correct answer
6.25% and 998.25 cm2
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