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The ratio of radii of two right circular...

The ratio of radii of two right circular cylinders is 2 : 3 and their heights are in the ratio 5:4. The ratio of their curved surface area is
दो लंब वृत्तीय बेलनों की त्रिज्याओं का अनुपात 2 : 3 है और उनकी ऊँचाई-5 : 4 अनुपात में है। उनके वक् पृष्ठ के क्षेत्रफल का अनुपात है-

A

`5: 6`

B

` 3:4`

C

`4:5`

D

`2:3`

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CHAMPION PUBLICATION-2011 TIER-II PAPER(23)-EXERCISE
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