SOLUTION: Find the perimeter of the rectangle whose length is 40cm and a diagonal is 41cm.

SOLUTION: Find the perimeter of the rectangle whose length is 40cm and a diagonal is 41cm.

Algebra.Com

Question 814819: Find the perimeter of the rectangle
whose length is 40cm and a
diagonal is 41cm.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Let y = size of unknown side.
, because the diagonal is the hypotenuse of the triangle with the legs, 40 and y.

which is simplifiable as
--------- Do you recognize why?

Solved for y is the main missing piece to finding the answer to the actual question, which I now leave for you to finish.
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