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IKMC 2019 - Grades 11-12 - Self-study Question 18

IKMC · IKMC 2019 - Grades 11-12 - Self-study

Question 18

The diagram shows adjoining squares of side lengths $a,b$, with $a\lt b$. What is the grey triangle’s area?

Question illustration
  1. $\sqrt{ab}$
  2. $\frac12a^2$
  3. $\frac12b^2$
  4. $\frac14(a^2+b^2)$
  5. $\frac12(a^2+b^2)$