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The radius of a sphere is reduced by 40%...

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

0.6

B

0.64

C

0.725

D

0.784

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The radius of a sphere is increased by 140%. By what percent is the volume increased? एक गोले की त्रिज्या 140% बढ़ा दी जाती है। आयतन कितने प्रतिशत बढ़ेगा ?

The radius of a cylinder is increased by 60% and height is decreased by 20%, what is percentage increase in it’s volume? एक बेलन की त्रिज्या 60% बढ़ा दी जाती है और ऊंचाई 20% कम कर दी जाती है | इसके आयतन में कितने प्रतिशत की वृद्धि होगी ?

If each side of a square is decreased by 17%, then by what percentage does its area decrease? यदि किसी वर्ग का प्रत्येक भुजा को 17% घटाया जाता है, तो उसके क्षेत्रफल में कितने प्रतिशत की कमी आती है?

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 ?

If each side of a rectangle is decreased by 13%, then its area will decrease by : यदि किसी आयत की प्रत्येक भुजा को 13% कम कर दिया जाए, तो इसका क्षेत्रफल कितना कम हो जाएगा ?

The radius of a cylinder is increased by 150 % and its height is decreased by 20 %. What is the percentage increase in its volume? एक बेलन की त्रिज्या 150 % बढ़ा दी जाती है तथा इसकी ऊंचाई 20 % कम कर दी जाती है | इसके आयतन में कितने प्रतिशत की वृद्धि होगी ?

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