SOLUTION: The glass for a window is 7.5 ft wide. About how high must a doorway have be in order for a contractor to get the glass through the door if the doorway is 3 ft wide? I'm not sure w

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Question 947258: The glass for a window is 7.5 ft wide. About how high must a doorway have be in order for a contractor to get the glass through the door if the doorway is 3 ft wide? I'm not sure what to do, I'm not even sure where to START.Thank you for your help in advance!
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The glass for a window is 7.5 ft wide.
About how high must a doorway have be in order for a contractor to get the glass through the door if the doorway is 3 ft wide?
:
Assuming the shorter side of the glass is 7.5 ft, carried thru the door diagonally we can solve this as follow:
Using pythag, a^2 + b^2 = c^2, where:
a = 3 ft
b = the height of the door which we are trying to find
c = 7.5 ft
3%5E2+%2B+b%5E2+=+7.5%5E2
9+%2B+b%5E2+=+56.25
b%5E2+=+56.25+-+9
b%5E2+=+47.25
b = sqrt%2847.25%29
b = 6.9 ft, Which is 6 + .9(12) = 6 ft 10.5 inch door would do nicely