SOLUTION: length of 3rd side of triangle. ab=9.5 bc=7 ac=??? i am trying to lay out the stringers for a stairway and need to know the length of the one side. the triangles are the

Algebra ->  Triangles -> SOLUTION: length of 3rd side of triangle. ab=9.5 bc=7 ac=??? i am trying to lay out the stringers for a stairway and need to know the length of the one side. the triangles are the      Log On


   

Question 120543: length of 3rd side of triangle. ab=9.5 bc=7 ac=???
i am trying to lay out the stringers for a stairway and need to know the length of the one side. the triangles are the stair steps.
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
my assumption is that you need the longest side?

by Pythagoras, the sum of the squares of the short sides equals the square of the long side

x^2=9.5^2+7^2 __ x^2=90.25+49 __ x^2=139.25 __ x=11.80

good luck with the stairs