Question

What the hypothenuse of a right with length of 6 and 8

Answer 1

This is a pythagorean triple --> 3-4-5
Although you notice it is doubled but with the same pattern --> 6-8-10

Thus, the hypotenuse is 10. 

Answer 2

H square = b square + p square H = square root b square+ p square H= square root 8 square+6 square H= square root 64+36 H= square root 100 H= 10