Question

please solve this question

Answer 1

Hi Mate!!!

Surface area of Sphere = 4 π r²

Let the surface area of ist sphere be = 4 π r1²

and

Surface area of 2nd of Sphere = 4π r'²

.............................................................................

Dividing both the surface areas

r1² / r'² = 1:4

r1 / r' = 1/ 2

r' = 2r1

Volume of ist sphere(v1) ={ 4 / 3 } π r1³

And

Volume of 2nd sphere(v2) = ( 4 / 3 ) π r'³

........................................................................

Dividing both the surface areas

r1³ / r'³ = v1 / v2

put r' = 2r1

r1³ / 8r1³ = v1 / v2

=>. v1 / v2 = 1 : 8

Have a nice time