how many different rectangles have an area of 5 square units?

many millions of them.

here is one: L=.000001 W=5000000

Here is another: 1 x 5

Here is another: 2500 x .002

I will leave the other billion to you.

4 because those are the shapes you can put 5 units in to

To find the number of different rectangles with an area of 5 square units, we need to consider all possible lengths and widths that satisfy the equation length × width = 5.

Let's start by listing all the factor pairs of 5:
1 × 5 = 5
5 × 1 = 5

From these factor pairs, we can determine two different rectangles:
1. A rectangle with length = 1 and width = 5
2. A rectangle with length = 5 and width = 1

Therefore, there are two different rectangles with an area of 5 square units.