BRAIN BUSTER: How many rectangles are in the picture?

10?

Step-by-step explanation:

There are 4 ways the rectangle can consist of 2 squares, 3 ways the rectangle can consist of 3 squares, 2 ways it can consist of 4 squares, and 1 way it can consist of 5.

4+3+2+1= 10. I could be wrong but I am pretty sure this is how you do it.

Read below.

Step-by-step explanation:

A perfect cube is a number cubed (If that makes sense). Such as 3³ will equal a perfect cube because it's being multiplied by itself 3 times. 3×3×3=9. It will work for any whole number. You can check if a given number is a perfect cube by using the cube root ().

Hope it makes sense!