To the nearest tenth of a centimeter, what is the circumference of a circle with a radius of 2.5 cm? (Use 3.14 for π.)

Use the circumference formula C = 2πr. With r = 2.5 cm and π = 3.14, C = 2 × 3.14 × 2.5 = 15.7 cm, so the correct choice is 15.7 cm.

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