Q. 15 C3.8( 4 Votes )

Let us fill in th

Answer :

(i) Sphere.

(ii) Curved and Flat


(iii)


Whole surface area of a solid hemisphere of radius r = 2×π×r2 + π×r2 = 3×π×r2


Surface area of radius 2r = 3×π×(2r)2 = 12×π×r2


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