Question

Does the set of numbers form a Pythagorean triple? Explain
Please help me

Answer 1

according to Pythagoras theorem :

`{x}^(2) = {2}^(2) + {4}^(2) \\ {x}^(2) = 4 + 16 = 20 \\ x = √(20) = 4.47`
so D is true