Answer:
3 : 4 ratio of radii
9 : 16 ratio of areas
Step-by-step explanation:
The ratio of radii is the same as the ratio of diameters:
one : the other = 6 :8 = 3 : 4
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The ratio of areas is the square of the ratio of radii:
one : the other = 3² : 4² = 9 : 16
