Using π = 22/7, what is the circumference of a circle with radius 7?
Answer and explanation
Correct answer: C. 44
- Step 1: Circumference = 2πr. Step 2. 2 · (22/7) · 7 = 44. Answer: 44. Why not the others: 154 is the area, and 22 uses r instead of 2r.
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