Result: Circumference = 150.72cm
Explanation:
To find the circumference, C, we will use this formula:
C = 2 * 3.14 * r
Substitute:
C = 2 * 3.14 * 12
Multiply:
2 x 12 = 24
24 x 3.14 = 75.36
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And since the question asked for two revolutions.
All we need to do is multiply 75.36 by 2:
75.36 x 2 = 150.72