Question:![]() In the figure above, r1 and r2 are the radii of two circles which have the same center. If the area of the shaded region is 40 and the ratio of r1 to r2 is 1:3, what is the area of the smaller circle? A) 3 B) 5 C) 6 D) 7 E) 8 |
Choose Your Answer:
-Mixed Numbers such as 2
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HELP!
-If a Decimal Answer does not fit in the space, it MUST be rounded AND contain 4 characters, including the decimal. For example,
-Do NOT add a leading zero to a decimal, so 0.33 would be incorrect, while .33 would be correct. |
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