The phrase 'of the same length' is correct and can be used in written English.
For example, you could write, "We had two pieces of string of the same length."
This one didn't take as long as a short story of the same length would take.
It may be more effective if the stanzas were of the same length.
The stem is measured and bundles of the same length are packaged together.
After two sequences of the same length, the number of digits is increased by one.
Background subtraction can only be performed when data and background are of the same length.
For instance, let's say I had two lists that were of the same length.
But this relation is reflexive in the weaker sense that, whenever an object is of the same length as anything, it is of the same length as itself.
One species, S. anginosus, gave an amplification product of the same length as S. pneumoniae.
He found that almost no other works contained the same words in passages of the same length.
My first job was to find two phrases of the same length to express remaining or exiting.
These strings are all of the same length but vary in thickness and hence in elasticity.
