Name The Mysterious Golden Ratio

Directions: Measure the longest side of the rectangle shown here.
Now, divide this number by the measurement of its
shortest side. The answer is called its ratio.
The ratio of a to b is
a
The ratio of the length to the width of this rectangle is said to be one of the most eye-
pleasing rectangular shapes that exist. This ratio can be seen in nature, art, and architecture.
One well-known example is the Parthenon.
I need help ASAP please due tomorrow 6th grade ratio