Verified Answer :

penfila11Pen

the volume is scale factor³
Take the square root of the volume ratio

\(\sqrt{ \frac{27}{125} }\) which is 
\(\frac{ \sqrt{27} }{ \sqrt{125} }\)

\(\frac{3}{5}\)

The ratio of their radii is 3 : 5

Agl202

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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