What is the ratio of the area of sector abc to the area of sector dbe?
i am not quite sure how to do this. so far, since there are variables instead of numbers, i have got (pi)(r)^2: (pi)(3r)^2, but i know that is definitely wrong.

Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d