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If the radius of a right circular cone i...

If the radius of a right circular cone is reduced by 10% and its height is increased by 40%, then find the percentage increase or decrease in its volume.
यदि एक लंब वृत्तीय शंकु की त्रिज्या को 10 % कम किया जाता है और उसकी ऊंचाई को 40 % बढ़ाया जाता है, तब उसके आयतन में कितने प्रतिशत की वृद्धि या गिरावट होती है?

A

13.4 % of decrease

B

1.34 % of decrease

C

1.34 % of increase

D

13.4 % of increase

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If the radius of a right circular cone is increased by p% without increasing its height, then what is the percentage increase in the volume of the cone ?

The radius of a cylinder is increased by 120% and its height is decreased by 40%. What is the percentage increase in is volume? एक बेलन की त्रिज्या 120% बढ़ा दी जाती है तथा इसकी ऊंचाई 40% कम कर दी जाती है | इसके आयतन में कितने प्रतिशत की वृद्धि होगी ?

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