Question

Triangle ABC is a right triangle. If side AC=5 and side BC=6, What is the measure of side AB?

Answer 1

IF sides AC and BC are the 'legs' of the triangle, then the length of the 3rd side is

√ (5² + 6²) = √(25 + 36) = √61 = 7.81 (rounded)


IF side BC is the longest side (hypotenuse) of the triangle, then the length of
the 3rd side is

√(6² - 5²) = √(36 - 25) = √11 = 3.32 (rounded)