SOLUTION: A post is 9 ft. from one wall of a room and 40 ft. from the wall at right angle to it. How many ft. is it from the the intersection of the two walls?

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Question 107893: A post is 9 ft. from one wall of a room and 40 ft. from the wall at right angle to it. How many ft. is it from the the intersection of the two walls?
Answer by stanbon(57238) About Me  (Show Source):
You can put this solution on YOUR website!
A post is 9 ft. from one wall of a room and 40 ft. from the wall at right angle to it. How many ft. is it from the the intersection of the two walls?
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Let one wall be the x-axis ; Let the other wall be the y-axis.
The post is at (4,9); the interection of the walls is (0,0)
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Distance from (0,0) to (4,9):
d = sqrt(4^2+9^2)= sqrt(16+36)= sqrt(52) ft.
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Cheers,
Stan H.