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Three circles of radius 3.5cm are placed in such a way that each circle touches the other two. The area of the portion enclosed by the circles is

Correct Answer: 1.967

Explanation:

required area = (area of an equilateral triangle of side 7 cm)- (3 * area of sector with à = 60 degrees and r = 3.5cm)
3 4 * 7 * 7 - 3 * 22 7 * 3 . 5 * 3 . 5 * 60 360  sq cm


 


= 3 4 * 49 - 11 * 0 . 5 * 3 . 5  sq cm


 


= 1.967 sq cm


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