bino2 bino2
  • 14-04-2016
  • Mathematics
contestada

the volume of 2 spheres have a ratio of 27:125. what is the ratio of their radii

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penfila11Pen
penfila11Pen penfila11Pen
  • 14-04-2016
the volume is scale factor³
Take the square root of the volume ratio

[tex] \sqrt{ \frac{27}{125} } [/tex] which is 
[tex] \frac{ \sqrt{27} }{ \sqrt{125} } [/tex]

[tex] \frac{3}{5} [/tex]

The ratio of their radii is 3 : 5
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Agl202
Agl202 Agl202
  • 14-04-2016
Using formula v of hemisphere= 2/3x22/7xr3
v of hemi a= r3= 12.8
                 = r   =2.3
v of hemi b= r3 = 59.6
                 =r    = 3.9
So the ratio is 2.3:3.9
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