SOLUTION: This is not from a textbook but a question put on an assignment sheet. I am not sure how to do this. Please help. A diagonal walk through a rectangular rose garden 18 meters by

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Question 193175: This is not from a textbook but a question put on an assignment sheet. I am not sure how to do this. Please help.
A diagonal walk through a rectangular rose garden 18 meters by 24 meters can be built at $12 per linear meter. How much will the walk cost?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A diagonal walk through a rectangular rose garden 18 meters by 24 meters can be built at $12 per linear meter.
How much will the walk cost?
;
Diagonal is the hypotenuse of a rectangle 18 by 24 rectangle, therefore
Cost = 12%2Asqrt%2818%5E2%2B24%5E2%29
do the math and you got it: