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തുല്യ വ്യാപ്തമുള്ള രണ്ടു വൃത്തസ്തൂപികകളുടെ ആരങ്ങൾ 4: 5 എന്ന അംശബന്ധത്തിലാണ് അവയുടെ ഉയരങ്ങളുടെ അംശബന്ധം എത്ര?

A25:16

B16:25

C8:10

D12:15

Answer:

A. 25:16

Read Explanation:

13πr12h1=13πr22h2\frac13\pi{r_1^2}h_1=\frac13\pi{r_2^2}h_2

13π42h1=13π52h2\frac13\pi{4^2}h_1=\frac13\pi{5^2}h_2

16h1=25h216h_1=25h_2

h1h2=2516\frac{h_1}{h_2}=\frac{25}{16}

h1:h2=25:16h_1:h_2=25:16

 

 

                                                                                                                                                                         

 


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