Answer :

For cylinder, we have


Base radius = r


Height = h


Curved surface area S1 = 2πrh


For cone, we have


Slant height l =


S2 = πrl =πr


We have,


= =


==


(squaring both side )


= =


= 100h2 = 64r2+64h2


= 36h2 = 64r2


(Square root both side )


= 6h = 8r


==


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