Question

As we know that
Volume of sphere ( =frac{4}{3} pi r^{3} )
( therefore frac{1}{4 / 3 pi r_{2}^{3}}=frac{1}{8} )
( Rightarrow quad frac{9_{1}}{92}=3 frac{1}{0} )
( Rightarrow frac{r_{1}}{r_{2}}=frac{1}{2} )
Surfect are Ratio of ( =frac{4 pi 9^{2}}{9-592}=left(frac{1}{2}right)^{2}=frac{1}{4} )
swrace Area ( -frac{1}{4} )

# z. If the ratio of volumes of two spheres is 1:8, 27 then the ratio of their surface areas is (A) 1:4 (8) 1:2 (C) 1:8 (D) 1:6 on 24,000 2

Solution