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The area enclosed between the circumferences of two concentric circles is 45π square cm and their radii are in the ratio of 3:2. What is the area off the outer circle?
5Q:
The area enclosed between the circumferences of two concentric circles is 45π square cm and their radii are in the ratio of 3:2. What is the area off the outer circle?
- 149 π sq.cmfalse
- 281 π sq.cmtrue
- 3100 π sq.cmfalse
- 464 π sq.cmfalse
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