SAT Essay Length?

I’ve heard/read that to get a double digit score on the essay component you need to have 3 body paragraphs? The only thing is that there are 2 pages so how can you fit in 3 body paragraphs (an intro and conclusion) of a decent length?

Ideally, you want a paragraph that introduces your argument, then maybe 2-3 body paragraphs supporting your argument, followed by a conclusion. Try to fill up the 2 pages.