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Question

Two circular cylinders of equal volume have their heights in the ratio 1 : 2. The ratio of their radii is

(a) 1 : 2        (b) 2:1        (c) 1 : 2        (d) 1 : 4


Solution

Let their height be h and 2h
and redii be r and R respectively. Then

πr2(h)=πR2(2h)

r2R2=2hh=2/1

rR=21                             


2:1

(b)2:1  


Mathematics
Secondary School Mathematics X
Standard X

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