SAT Math

Category - Geometry and Measurement

The diameter of a circle is 5 cm. What is its circumference?
  1. 3.14
  2. 15.7 cm
  3. 157 cm
  4. Not enough information to solve
Explanation
Answer: B - If the diameter of a circle is 5 cm, its circumference is approximately 15.7 cm. The formula for circumference is 3.14, or π, multiplied by diameter.
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