SOLUTION: The area of a garden is 972 square feet, and the length of its diagonal is 45 feet. Find the dimensions of the garden.

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Question 1178962: The area of a garden is 972 square feet, and the length of its diagonal is 45 feet. Find the dimensions of the garden.
Found 2 solutions by mananth, ikleyn:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Let's assume the garden is a square.
the angles are 90 deg.
Apply Pythagoras theorem
x^2+x^2 =972
2x^2 = 972
x^2 = 486
Area is 486

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
The area of a highlight%28rectangular%29 garden is 972 square feet, and the length of its diagonal is 45 feet.
Find the dimensions of the garden.
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            The solution by @Mananth is irrelevant and has nothing in common with the problem.

            For your safety,  simply  IGNORE  HIS  (or her)  POST.

            I came to bring the correct solution.

            Notice how I edited the condition in order for the problem would make sense.


Let x be the larger dimension of the rectangle, 

and let y be its smaller dimension.


Then we have these two equations from the condition


    xy = 972            (1)

    sqrt%28x%5E2+%2B+y%5E2%29 = 45.    (2)


From equations (1) and (2), you get


    x^2 + 2xy + y^2 = 45%5E2 + 2*972 = 3969 = 63%5E2

    x^2 - 2xy + y^2 = 45%5E2 - 2*972 =   81 = 9%5E2.



It can be simplified to

    x + y = 63

    x - y =  9


It implies  2x = 63+ 9 = 72;  x = 36;  y = 27.


ANSWER.  The dimensions of the rectangle are 36 feet and  27 feet.


Solved (correctly).