Mathematics · Geometry
Three concentric circles are designed as part of a target practice board. Their diameters form an arithmetic progression. If the smallest circle has a circumference of 6π cm and the largest circle has a circumference of 14π cm, what is the circumference of the middle circle?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 111π cm
- 212π cm
- 310π cm✓
- 48π cm
Correct answer
10π cm
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