Question

A triangle has sides of sqrt 2 and 3. Which could not be the length of the third side if it is a right triangle?

a. sqrt 7
b. sqrt 11
c. sqrt 13

Answer 1

the answer would be C

Answer 2

The answer is C. √13. This is because it's a right angled triangle so you could use Pythagoras' theorem and say that 2 + 3^2 = c^2 = 11, or 3^2 - 2 = a^2 = 7, so both a and b are probable. C, however, is not. I hope this helps!