Question

the radii of the two spheres are in the ratio 3:2 their area bears the ratio=
____??___​

Answer 1

let the radius be 3x and 2x

Ratio of their area = area of 1 sphere/area of 2 sph ere

= 4π×3x ×3x/4π×2x×2x

= 9x²/4x²

= 9/4

so the ratio of their area is 9:4

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