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IKMC 2005 - Grades 11-12 - Self-study Question 10

IKMC · IKMC 2005 - Grades 11-12 - Self-study

Question 10

Three semicircles are shown. ABEF is a rectangle; every semicircle has radius 2 cm. E and F are the centres of the bottom semicircles. Find the shaded area in cm².

Question illustration
  1. 8
  2. 7
  3. $2\pi$
  4. $2\pi+1$
  5. $2\pi+2$