Question

Two sides of an isosceles triangle measures 9 and 18. Which of the following could be the measure of the other side?

Answer 1

20.124

Explanation:

remember the pythagoream theurm states a^{2} + b^{2} =c^{2} so

9 x 9 = 81

18 x 18 = 324

324+81 = 405

now you have to sq root it (20.1246)