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The diameter of a right circular cylinde...

The diameter of a right circular cylinder is decreased to one third of its initial value. If the volume of the cylinder remains the same, then the height becomes how many times of the initial height ?
एक लम्ब वृत्तीय बेलन के व्यास को इसके आरंभिक मान से एक तिहाई कम कर दिया जाता है | यदि बेलन का आयतन समान बना रहता है, तो इसकी ऊंचाई अपने आरंभिक मान से कितना गुना हो जाएगी ?

A

1

B

9

C

6

D

3

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