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The difference between circumference and semidiameter of a circle is 37 cm. What is the diameter of the circle ?

18 cm
12 cm
16 cm
14 cm

Correct Answer: 14 cm

Explanation:

circumference of a circle = 2 $π$ r

=> 2 × 22/7 × r – r = 37

=> 37/7 × r = 37

=> r = 7 cm.

Diameter D = 2r = 7×2 = 14 cm.

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