If the diameter of circle C is 3 times greater than the diameter of circle D, the area of circle C is how many times the area of

Question

netineya [11]

4 years ago

8

If the diameter of circle C is 3 times greater than the diameter of circle D, the area of circle C is how many times the area of

circle D?

Mathematics

1 answer:

amid [387] · Answer 1 · 2022-01-12T07:02:17+03:00

amid [387]4 years ago

7 0

The radius of circle C is also 3 times greater than the radius of circle D.
The area of circle C:
A C = (3r)² π = 9 r² π
The area of circle D:
A D = r² π
9 r² π : r ² π = 9
Answer: It is 9 times the area of circle D.