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3 years ago

A diagram of a coin is shown.

Mathematics

1 answer:

n200080 [17]3 years ago

4 0

Answer:

C. 66 mm (using 3.14, it would be 65.94 mm)

Step-by-step explanation:

From what I know, the radius of this coin is 10.5 mm.

The formula for the circumference of a circle is 2πr or πd.

In this case we're using 3.14 for π.

(2 * 10.5) * 3.14

21 * 3.14

21 * 3.14 is the same as 62.8 + 3.14

62.8 + 3.14

65.94 mm

This is close to 66 mm, which was C, so that is the answer.

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