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ITMC 2018 Grade 9 National Preliminary set01 Question 20

ITMC · ITMC 2018 Grade 9 National Preliminary set01

Question 20

A right triangle has hypotenuse $c$, other side lengths $a,b$, and area $A$. Find $a+b$.
  1. $4A/c^2$
  2. $4Ac^2$
  3. $c^2/(4A)$
  4. $c+2\sqrt A$
  5. $\sqrt{c^2+4A}$