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Circles!

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  • A soldier wants his shield to have a radius of 12 inches. What would the circumference of the soldiers shield be? Leave answer in terms of π.
    24π
  • Casey is walking her dog with her leash and her dog is walking around her in a perfect circle. The length of the leash is 5 cm. Find the circumference of the circle that Casey's dog is walking in. Keep answer in terms of π
    10π
  • If the circumference of a circle is 32π, then what is radius and diameter of the circle?
    Diameter=32; Radius=16
  • What is the name of the point at which the tangent line intersects the circle?
    The point of tangency
  • What is the longest chord in a circle?
    The diameter
  • Would an archery target be a real life example of concentric circles?
    Yes
  • Is a chord a diameter?
    No; a diameter is a chord
  • The two formulas to find circumference:
    2πr and πd
  • All circles are...
    SIMILAR!
  • If the diameter of a circle is 4 what is the circumference? Leave answer in terms of π