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Two circle X and Y with centres A and B intersect at C and D. If area of circle X is 4 time area of circle Y, then AB=?
Q:
Two circle X and Y with centres A and B intersect at C and D. If area of circle X is 4 time area of circle Y, then AB=?
- 15rfalse
- 2$${\sqrt{5}r}$$true
- 33rfalse
- 4$$ {\sqrt{5}\over 2}r$$false
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