If a, b and c are in continued proportion, then a2 :  b2 isA a2 :  c2 B a : b C a : c D b : c

No answer

If a, b, and c are in continued proportion, it means that the ratio of a to b is the same as the ratio of b to c. In mathematical terms, this can be written as a/b = b/c.

Now, if we square both sides of this equation, we get (a^2)/(b^2) = (b^2)/(c^2).

However, we want to find the ratio of a^2 to b^2. From the equation above, we can see that the ratio of a^2 to b^2 is the same as the ratio of b^2 to c^2.

Therefore, the answer is A: a^2 : c^2.