What is the topic of the article

The topic is the general subject of a paragraph or essay. Topics are simple and are described with just a word or a phrase. The main idea is a complete sentence; it includes the topic and what the author wants to say about it. If the author states the main idea in his paragraph it is called a “topic sentence.”

Explanation:

topic=a matter dealt with in a text, discourse, or conversation; a subject.

article=a piece of writing included with others in a newspaper, magazine, or other publication.

Explanation:

those some definitions i have found for your confusing question

we know that, volume of a rectangular prism is given by :

✿   {length × width × height}

given : the length of rectangular prism = 5.5

given : the width of rectangular prism = 6

given : the height of rectangular prism = 3

⇒ the volume of given rectangular prism = {5.5 × 6 × 3}

⇒ the volume of given rectangular prism = 99

i would need to know the specific part of the passage your referring to ?