# 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)   (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? ------------ 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) ---------- Distance from (0,0) to (4,9): d = sqrt(4^2+9^2)= sqrt(16+36)= sqrt(52) ft. ============= Cheers, Stan H.