Find the length of the missing side of a rectangle if the diagonal is 13 cm and the shortest side is 5cm​

And please show the steps and explain

1 Answer

  • Answer:

    12 cm

    Step-by-step explanation:

    I drew a picture of a rectangle with a diagonal measurement of 13 units and what appear to be the shortest side to be 5 units. (This picture was not drawn to scale.) We were has to find the longest side which I said was b. Notice the diagonal cuts the rectangle into right triangles.

    We will need to use Pythagorean Theorem to find the length of the longer side of the rectangle.



    Subtract 25 on both sides:


    Take square root of both sides:

    [tex]b=\sqrt{144}[/tex] (I did not worry about the negative answer to this because we are dealing with lengths.)