Question

If the ratio of radii of two solid spheres is 2:3
then the ratio of whole surface area of the sphere is 23 then the ratio of whole surface
area of the sphere will be 4:9​

Answer 1

Step-by-step explanation:

let radius of big sphere is R

let radius of small sphere is r

R/r = 2/3

whole surface area of sphere is 4pir^2

then ratio would be

4piR^2/4pir^2 = R^2/r^2

= 2^2/3^2

= 4:9

is that ok

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