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The length and breadth of a cuboid are increased 10% each, whereas the height is reduced by 10%. By how much did the volume change?
एक घनाभ की लंबाई और चोड़ाई (प्रत्येक को ) 10% बढ़ा दिया जाता है जबकि ऊंचाई को 10% कम कर दिया जाता है | आयतन में कितना परिवर्तन आया ?

A

10% decrease

B

8.9% increase

C

8.9% decrease

D

10% increase

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The length and breadth of a cuboid are increased by 10% and 20%, respectively, and its height is decreased by 20%. The percentage increase in the volume of the cuboid is: एक घनाभ की लंबाई और चौड़ाई क्रमश 10% और 20% बढ़ जाती है, और इसकी ऊंचाई 20% तक कम हो जाती है। घनाभ के आयतन में प्रतिशत वृद्धि है:

If the length of a rectangular plot of land is increased by 5% and the breadth decreased by 10%, by how much will its area change?

If the height of a circular cone is decreased by 10% and its radius is increased by 10%, then what will be the change in its volume? यदि किसी वृत्ताकार शंकु की ऊंचाई 10% कम कर दी जाती है और इसकी त्रिज्या को 10% बढ़ा दिया जाता है, तो इसके आयतन में क्या परिवर्तन आएगा ?

The radius of a sphere is reduced by 40%. By what percent, will its volume decrease? एक गोले की त्रिज्या को 40% कम कर दिया जाता है, इसका आयतन कितने प्रतिशत घटेगा?

A number is decreased by 30%, then increased by 30%, then further decreased by 10%. What is the net increase / decrease percent in the number (correct to the nearest integer) ? एक संख्या को 30% कम कर दिया जाता है, फिर 30% बढ़ा दिया जाता है, और इसके बाद पुनः 10% कम कर दिया जाता है | संख्या में शुद्ध प्रतिशत वृद्धि / कमी ( निकटतम पूर्णांक तक सही ) ज्ञात करें |

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?

The average of a few numbers is 48. If 75% of the numbers are increased by 4 each and the rest are decreased by 6 each, then what is the average of the numbers, so obtained? कुछ संख्याओं का औसत 48 है | यदि 75% संख्याओं को 4 से बढ़ा दिया जाता है और शेष संख्याओं को 6 से कम कर दिया जाता है, तो इस प्रकार इन संख्याओं का प्राप्त होने वाला औसत होगा :

If each edge of a cube is increased by 10%, then the percentage increase in its surface area is: यदि किसी घन के प्रत्येक किनारे को 10% बढ़ा दिया जाता है, तो इसके पृष्ठ क्षेत्रफल में कितने प्रतिशत की वृद्धि होगी?

A number is increased by 30%, then decreased by 30%, then further decreased by 30%. What is the net increase/decrease percent in the number (correct to the nearest integer) ? एक संख्या को 30% बढ़ा दिया जाता है, फिर 30% कम कर दिया जाता है, और पुनः 30% कम कर दिया जाता है | संख्या में शुद्ध प्रतिशत वृद्धि या कमी ( निकटतम पूर्णांक तक सही ) ज्ञात करें |

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