1) The diameter of the circle is 22cm , then the radius = ..... cm a) 44 b) 11 c) 22 2) The diameter of the circle is 100 mm , then the radius = ..... mm a) 50 b) 200 c) 100 3) The radius of the circle is 14 m , then the diameter = ..... m a) 7 b) 14 c) 28 4) The radius of the circle is 16 in , then the diameter = ..... in a) 16 b) 32 c) 8 5) In the circle , the radius is r and the diameter is d , then d ..... r a) > b) < c) = 6) In the circle , the radius is r and the diameter is d , then d = ... r a) 2 b) 3 c) 4

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