The diagonal of a rectangular figure is an illustration of Pythagoras theorem
The length is 16 in, and the width is 12 in
The given parameters are:


The diagonal is calculated using, the following Pythagoras theorem

Represent length with L and width with W
So, we have:


This gives

Expand


Divide through by 2

Rewrite as:


Using a calculator, we have:

The width cannot be negative.
So, we have:

Recall that:

This gives


Hence, the length is 16 in, and the width is 12 in
Read more about diagonals at:
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