Question

plz answer fast by step wise

Answer 1

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THE ANSWER IS HERE,

Let the radius of 1st sphere be x.
And radius of 2nd sphere be y.

Ratio of surface areas of two spheres .

$= > \: \frac{4\pi {x}^{2} }{4\pi {y}^{2} } = \frac{1}{4}$

$= > \: \frac{ {x}^{2} }{ {y}^{2} } = \frac{1}{4}$

$= > \: \frac{x}{y} = \frac{1}{2}$

Ratio of the volumes of the spheres,

$= > \: \frac{ \frac{4}{3}\pi {x}^{3} }{ \frac{4}{3}\pi {y}^{3} }$

$= > \: ({ \frac{x}{y} })^{3}$

$= > \: ( { \frac{1}{2} )}^{3}$

$= > \: \frac{1}{8}$

So, The ratio of their volumes => 1:8

:-)Hope it helps u