5/6 equals 10/12. So there are 10 1/12's in 5/6:
1/6 = 2/12
2/6 = 4/12
3/6 = 6/12
4/6 = 8/12
5/6 = 10/12
Theorem: pythagorean
Equation: 5^2 + h^2 = 8^2
Solving:
25 + h^2 = 64
h^2 = 39
h =

Hope this helps!! :)
Answer:
area of square =length × length ×height
=6×6×8
=288