Using the pythagorean theorem find the length of a leg of a right triangle if the other leg is 8 feet long and the hypotenuse is 10 feet long

L  7                 10
l     7
l        7
l           7
l              7
__________   8

(8)squared+b squared=10 squared
64+b=100         subract 64
now fiquere out what sauqered =36
wich is 6 so the last side is 6

She will need 5/8 bags for each square yard.