Question f534bac4

Geometry and Trigonometry - Area and volume

  • From left to right, the 3 points have the following coordinates:
    • (4 comma 8)
    • (7 comma 11)
    • (7 comma 5)

The three points shown define a circle. The circumference of this circle is kπ, where k is a constant. What is the value of k ?

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