A thread of length 12 cm wraps completely around the outline of a coin two times. What is the length of the circumference of the coin?

8 cm

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7 cm

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6 cm

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5 cm

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Solution

The correct option is C 6 cm
Length of the thread = 12 cm
Since the thread wraps around the circumference of the coin exactly two times, its length is twice the length of the circumference of the coin.
So, 2 × length of the circumference of the coin = 12 cm.
Hence, length of the circumference of the coin = 12 cm/ 2 = 6 cm.

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