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The radius of a cylinder is increased by...

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 ?

A

`180.6%`

B

`212.8%`

C

`190.4%`

D

`175.4%`

Text Solution

Verified by Experts

The correct Answer is:
C
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If the radius of a right circular cylinder is decreased by 10% and height is increased by 20%, then the percentage increase/ decrease in its volume is: यदि एक लम्ब वृत्तीय बेलन की त्रिज्या 10% कम कर दी जाए तथा ऊंचाई 20% बढ़ा दी जाए, तो इसके आयतन में कितने प्रतिशत की वृद्धि या कमी होगी ?

If the radius of the base of a right circular cylinder is increased by 20% and the height is decreased by 30% then what is the percentage increase/decrease in the volume ? यदि सिलेंडर के आधार की त्रिज्या 20% बढ़ जाती है और लंबाई 30% तक कम हो जाती है तो आयतन में प्रतिशत वृद्धि / कमी क्या है?

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?

GAGAN PRATAP -PERCENTAGE-Percentage (Sheet-4)
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