Question

The Japanese 5 yen coin has a hole in the middle. The diameter of the coin is 22 mm and the diameter of the hole is 5 mm. What is the difference between the outer edge and the inner edge of the coin? If necessary, round your answer to the nearest tenth.

Answer 1

Sample response: To find the difference between the outer and inner edges of the coin, you would calculate the circumference of the coin, C= 22π, and the circumference of the hole, C = 5π. Then you would subtract to find the answer, 22π − 5π = 17π.

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Answer 2

Answer:20mm

Explanation: