Question

If one circle has a diameter = 6 inches and the other has a diameter = 8 inches, what is the ratio of the radii? Use the rule of ratios to find the ratio of the Areas.

Answer 1

3 : 4 ratio of radii

9 : 16 ratio of areas

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