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IKMC 2019 - Grades 5-6 - Set 2 - Self-study Question 15

IKMC · IKMC 2019 - Grades 5-6 - Set 2 - Self-study

Question 15

A big triangle is divided into equilateral triangles as in the figure. The side of the small gray triangle is 1 m. What is the perimeter of the big triangle?

Question illustration
  1. $15\text{ m}$
  2. $17\text{ m}$
  3. $18\text{ m}$
  4. $20\text{ m}$
  5. $21\text{ m}$