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Question
Four circles having equal radii are drawn with centres at the four corners of a square. Each circle touches the other two adjacent circles. If the remaining area of the square is 168 cm2, what is the size of the radius of the circle ? (in centimetres)
Options:
A .  14 centimetres
B .  1.4 centimetres
C .  35 centimetres
D .  21 centimetres
Answer: Option A

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