Question

Which of the following could be lengths of the sides of a 30° -60° -90° right triangle? A.) 9 cm, 9 cm, 9√2 cm B.) 10 cm, 20√3 cm, 20 cm, C.) 11 cm, 11√3 cm, 22 cm D.) 7cm, 7√2 cm, 7√3 cm

Answer 1

since it is a triangle with 90 angle use Pythagorean theory
a^2+b^2=c^2
then if more than two answers were correct check that in this triangle smallest side should be half the hypotenuse