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IKMC 2008 - Grades 9-10 - Self-study Question 24

IKMC · IKMC 2008 - Grades 9-10 - Self-study

Question 24

Find the length of the bold arc marked “? ” in the figure. The mutually tangent circles have radii 2,3,1. Source wording says “Perimeter”; the bold marking identifies the intended arc.

Question illustration
  1. $5\pi/4$
  2. $5\pi/3$
  3. $\pi/2$
  4. $3\pi/2$
  5. $2\pi/3$