Does the following triangle have a right angle? You must explain your answer clearly. Diagram not drawn accurately

Triangle inequality theorem state if each set of three numbers can be the lengths of the sides of a triangle. 1. 9, 8, 22. 2. 5,10,12. 3. 7,10,22. 4. 4,11,12. 5. 11,9,10. 6. 10,4,19. 7. 3,12,10. 8. 4,3,2. 9. 6,5,13. 10. 7,12,20. me .

Multiply. write your answer in simplest form. 3/8 x 5/7

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?