SOLUTION: Please I need help to solve this. Thank you! 4. (4 pts) A diagonal walk through a small rectangular garden 9 meters by 12 meters can be built at $10 per linear meter. How much

Algebra ->  Length-and-distance -> SOLUTION: Please I need help to solve this. Thank you! 4. (4 pts) A diagonal walk through a small rectangular garden 9 meters by 12 meters can be built at $10 per linear meter. How much      Log On


   



Question 144274This question is from textbook Survey of Math w/ Apllications
: Please I need help to solve this. Thank you!

4. (4 pts) A diagonal walk through a small rectangular garden 9 meters by 12 meters can be built at $10 per linear meter. How much will the walk cost?
This question is from textbook Survey of Math w/ Apllications

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
You can use Pythagorean theorem, Or you can take a quick look and see the trianlge is in the ratio 3:4:5. In this case, 9:12:15
Using the Pythagorean theorem. Find the diagonal as
c%5E2+=+a%5E2+%2B+b%5E2+
c%5E2+=+9%5E2+%2B+12%5E2+
c%5E2+=+225
c+=+15
So the cost is 15*10 = 150