OpenStudy (august899):

The circumference of circle A is 3 times greater than the circumference of circle B. What is the relationship between the areas of the circles? (Multiple choice)

1 year ago
OpenStudy (august899):

A.The area of circle A is 9 times greater than the area of circle B. B. The area of circle B is 9 times greater than the area of circle A. C. The area of circle A is 3 times greater than the area of circle B. D. The area of circle B is 3 times greater than the area of circle A.

1 year ago
OpenStudy (anonymous):

circumference of circle B=c \[c=2 \pi r,area ~a=\pi r^2=\pi \left( \frac{ c }{ 2\pi } \right)^2\] for A circumference=3c \[area=\pi \left( \frac{ 3c }{ 2 \pi } \right)^2=9~\pi \left( \frac{ c }{ 2\pi } \right)^2=9 ~\times~area~of~circle~B\]

1 year ago
OpenStudy (august899):

So A is the answer?

1 year ago
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