SSC
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Numerical Ability
Area and Volume
The volume of 2 cylinders are ( a: b) and their heights are ( c: d ) . Find the ratio of their diameters ?
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- Sqrt(ad/bc)
If radius of two cylinders=r1, r2 and height=h1, h2 respectively, then
Ratio of volumes=(Pi*r1^2*h1) / (Pi*r2^2*h2) =a/b
Given h1/h2= c/d, so r1^2/r2^2=ad/bc , r1/r2 = Sqrt(ad/bc)
Ratio of diameters= 2r1 / 2r2 =r1/r2 =Sqrt(ad/bc) - 8 years agoHelpfull: Yes(3) No(0)
- a/b=(r1^2*c)/(r2^2*d)
(ad/cb)^0.5=r1/r2 (answer)
- 8 years agoHelpfull: Yes(0) No(0)
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